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Diaphragm Pumps Diaphragm Pumps Principle of Operation/For Safe Use/Selection Materials…EF2 TD Series/Metal Body Type…EF16 TD Series/Plastic Type…EF20 ……EF26 ……EF48 TD2 Series/Metal Body Type…EF24 Electric Operated Diaphragm Pump ETD2 Series Accumulators for Diaphragm Pump

Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

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Page 1: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

Diaphragm

Pumps

Diaphragm Pumps

Principle of Operation/For Safe Use/Selection Materials…EF2

TD Series/Metal Body Type…EF16 TD Series/Plastic Type…EF20

……EF26 ……EF48

TD2 Series/Metal Body Type…EF24

Electric Operated Diaphragm Pump ETD2 Series

Accumulators for Diaphragm Pump

Page 2: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

2EF

TDPneum

atic Operated D

iaphragm Pump TD

3EF

Principle of Operation Model Confi guration

Application ExamplesPneumatic operated type diaphragm pumps have been used widely in various industrial fields, and their quality has been highly appreciated.

Transfer of cement, paints, slurry, sewage, asphalt, etc.

Transfer of various chemicals, latexes, adhesives, solvents, heavy oil, naphtha, etc.Cleaning in tanks.Transfer of plastic materials, ceramic materials, etc.Cleaning of parts by circulating solvents, pure water, etc.Transfer of adhesives, glue, preservatives, pulp drain, sludge, etc.Treatment of waste liquids.Transfer of lubricant, hydraulic fluid, cutting oil, electric discharge oil,parting agent circulating spray, discharged oil, etc.

Transfer of printing ink, glost, clay liquid, etc. Discharge of gasoline, engine oil, etc.

Civil engineering and construction

Chemical and petroleum industries

Electric andelectronic industriesTextile, papermaking,and leather industries

General machines

Others

●Water, seawater, and waste liquid are discharged. ●Various chemicals and various petroleum productsare transferred.

Discharge port

Suction port

Pneumatic valveSpool

Material

chamber A

Airchamber a

Air supply port

Exhaust port

Discharge port

Suction port

Pneumatic valve

Airchamber b

Air supply port

Exhaust port

The right and left diaphragms secured at both ends of the spool move horizontally to increase and decrease the pressure in the material chambers, and the material is suctioned and compressed discharge flow.

Materialchamber B Material

chamber A

Material

chamber B

When compressed air is flow into the air chamber a, the spool moves to the left, the material in the material chamber A is pushed out, and, at the same time, the material is suctioned into the material chamber B.

When the spool moves to the left and reaches the stroke end, the pneumatic valve is switched, the compressed air is flow into the right air chamber b, and the spool moves to the right.

When the spool moves to the right, the material in the material chamber B is pushed out, and, at the same time, the material is suctioned into the material chamber A.This cycle is repeated.

Model ConfigurationTD-08 TD-15 TD-20

TD-25 TD-40

(Metal body type)

Pump size : Rc1/4Max. discharge flow rate : 13ℓ/min

(Metal body type)

Pump size : Rc3/4Max. discharge flow rate : 54ℓ/min

Pump size : Rc1/2Max. discharge flow rate : 35ℓ/min

(Metal body type)

Pump size : G1

Max. discharge flow rate : 128ℓ/min

(Metal body type)

(Plastic type)

NPT1/249ℓ/min

(Plastic type)1” flangeANSI 150#

166ℓ/min

●When a thin sheet is laminated, an adhesive issupplied to the roller.

●In a chemical plant, chemicals are supplied to thetanks.

●Inks are supplied to the rolls.

●During coating, the liquid is constantly being agitated sothat the solid particles in the liquid do not settle.

(Metal body type)Pump size : Rc1/2Max. discharge flow rate : 341ℓ/min

Page 3: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

4EF

TDPneum

atic Operated D

iaphragm Pump TD

5EF

For Safe Use For Safe Use

●These products have been designed and manufactured as general industrial machine parts.

Improper handling of the product will cause a hazardous situation whichcan result in death or serious personal injury and property damage.

For WARNINGS and CAUTIONS in this section, the following definitions and signal words are used.The precautions marked with these signal words are to be followed to use the product safely. Important requirements are stated to prevent possible personal injury and property damage. Observe these instructions without fail.

WARNING :Improper handling of the product will cause a hazardous situation whichmay result in moderate or minor personal injury and property damage.CAUTION :

WARNING

●Strictly observe the warnings, cautions and prohibited acts stated in this catalog. Failure to do so may damage the product or machines around it or cause personal injury.

●Fluids which corrosion or damage occur to the materials of the wetted parts in the body or the diaphragms must not be used. See the compatibility table in the catalog, and use an appropriate model. If an inappropriate model is used, fluid leakage or breakage may be caused. For the compatibility with fluids, contact our sales offices.

●Before using the pump every day, check for fluid leakage from the pump. If any abnormality is found, do not use it, and ask us to inspect and repair it.

●Service the wear parts, such as the diaphragms, earlier. Do not use any unused wear part which has been stored for more than 1 year after it was purchased. Aging deterioration may have occurred.

●If any abnormality is found in the operation of the pump, do not operate it, and contact our sales office.

●When handling any toxic or smelly fluid, sufficiently ventilate the working area.

●Do not discharge the handled harmful substances, such as chemicals, directly to the installation surface. Dispose of the harmful substances in accordance with applicable laws and regulations.

●If the pump operating time and frequency is increased, replace the wear parts, such as the diaphragms, earlier.

●When using the pump, set the supply pressure to the max. working pressure (0.7 MPa) or less. If it is operated at a pressure exceeding the max. working pressure, it may be damaged, thereby causing personal injury or property damage. Purchase a pneumatic regulator or pneumatic filter regulator, and fit it to the pump.

●Never use a fluid inapplicable to the materials of the pump wetted parts or an explosive solution. If such a fluid is used, a chemical change accompanied with very hazardous explosion may be caused, resulting in personal injury including death and damage to building and equipment.

●When the pump is used in an atmosphere which can cause spontaneous ignition or used to transfer or circulate a highly flammable fluid at a high speed or to clean with such a fluid, human bodies may receive a shock due to electrostatic spark, ignition or heat generation, or personal injury and property damage may be caused by fire or explosion. Be sure to ground the pump using the supplied ground wire and ventilate the working area in accordance with the specified conditions of working environment. (TD-08, 15 and 20 and TD2-25 types come with a ground wire, and TD-25 and 40 types come with a ground terminal.)

●When using a fluid which may cause personal injury or property damage, be sure to take appropriate protective measures (e.g. treatment of exhaust), and strictly observe the following instructions.

●If the diaphragms are damaged, the fluid may spout from the exhaust port through the pneumatic valve, or pneumatic pressure may be applied to the fluid, resulting in seriously hazardous situations depending on the properties of the fluid.

Installation

(1) Installation place: Install the pump horizontally.Avoid using it on a slope.

(2) Installation direction: Install the pump with thearrow ↑ on the cover upward.

(3) Installation method: Surely tighten the mountingaccessories so that the pump and pipes will not bedamaged by vibrations.

1. Notes on installationThe installation condition affects the productlifetime. Observe the following instructions.

●Plastic type

●Duckbill type(Only TD-15PC-D)

Arrow Cover

Suction port

Check mechanism parts

Discharge port

Discharge port

Flow of liquid

Flow of liquid

Suction port

Manifold

Manifold

Suction port

Clamp

1 discharge port2 suction ports

2 discharge ports2 suction ports

2 discharge ports1 suction port

1 discharge port2 suction ports

Discharge port

WARNING

CAUTION

●When the pump is used in an atmosphere which can cause spontaneous ignition or used to transfer or circulate a highly flammable fluid or to clean with such a fluid, ground the pump using the supplied ground wire or ground terminal, and ventilate the working area depending on the working environment. Failure to do so may result in fire or explosion accompanied with personal injury or property damage.

●The manifolds can be mounted by one of the following four methods. The suction and discharge ports can be turned 360° to any direction by loosening the clamps. To change their directions, completely loosen the clamps. If they are turned forcibly, the O-rings may be damaged, and sealing failure may be caused.

●Two types of check mechanism are available, i.e. the ball check type (standard) and the duckbill type (semi-standard) which enables the pump to transfer liquids containing fibrous solid.

●In the case of the duckbill type (semi-standard), the liquid flowing direction can be changed by reassembling the check mechanism parts. (See the figure below.)When reassembling, take care not to damage the parts. If any part is damaged, sealing failure may be caused.

●Prevent transmission of load or vibration to the pump body through the piping. Material leakage or entry of pneumatic pressure may be caused, and personal injury or property damage may occur depending on the type of material.

●To connect the pump on the suction and discharge sides, use hoses or flexible tubes which can absorb the pump vibrations.

●Never step on or hang on the diaphragm pump. Doing so may cause injury and damage the pump.

●The suction head should be as low as possible. The maximum head is approx. 6 m (in the case of clear water).

●The directions of the fluid suction and discharge ports can be changed to the opposite directions.

●Carefully select the installation place, and install the pump by an appropriate method to absorb vibrations.

❶ ❷

❸ ❹

Page 4: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

6EF

TDPneum

atic Operated D

iaphragm Pump TD

7EF

For Safe Use For Safe Use

2. Notes for piping(connection of suction and discharge ports)

3. Notes for piping(connection of pneumatic pressure)

Operation

1. Checking before operation

CAUTION

CAUTION

●When selecting the piping material, take into consideration the appropriate size, resistance to liquid and pressure resistance. Failure to do so may cause liquid leakage and breakage.

●Never add any general antifreeze to the oil to be poured to the pneumatic lubricator fitted to the pneumatic pressure supply port. This may be harmful to the health. Provide the pneumatic pressure supply port with a set of three items, pneumatic filter, regulator and lubricator, to supply clean air and lubricant. Install these three parts as close to the diaphragm pump as possible. The distance between them affects the durability and capacity of the pump.

●For the pneumatic piping, do not use pipes thinner than the pneumatic pressure supply port.

●Use the pump at a supply air pressure equal to or lower than the maximum working pressure, 0.7 MPa.

●When connecting new pipes, flush the pipes before piping the pump to completely remove cuttings and dirt. Failure to do so can cause operation failure of the pneumatic valve.

●Before piping, flush the pipes. Take care that cuttings, sealing tape fragments, dirt and rust never enter the piping. They can cause operation failure.

●Pipe the pump appropriately so that lateral load will not be applied to the pump body. Application of lateral load can damage the threaded portions of the suction and discharge ports and cause troubles, such as sealing failure.

●On the pump suction and discharge sides, use hoses or flexible tubes which can absorb the pump vibrations.

●Use pipes which are not deformed by the negative pressure caused by pump suction.

●Before connecting the pneumatic pressure piping, check that the supply of pneumatic pressure is stopped. If the supply of pneumatic pressure is not stopped, the pump may start suddenly, thereby causing personal injury or property damage.

●Use the pump at a supply air pressure less than the max. working pressure. Failure to do so may cause personal injury or property damage.<Working pneumatic pressure range: 0.2 to 0.7 MPa>

●After the completion of operation or at night, disconnect the supply of pneumatic pressure, and discharge the pressure from the piping and pump. If the piping is cracked or the diaphragms are damaged while pneumatic pressure is being supplied, the pump may continue to operate leaking the fluid. The user is responsible for these second accidents.

●Do not use pipes thinner than the discharge and suction ports. If the pipe inner diameter is small, sufficient performance cannot be obtained.

●Fit a filter or a strainer on the suction side to protect the pump.

CAUTION

●Check that the pump body has been installed correctly and the mounting bolts are not loose. If the pump is operated with mounting bolts loosened, personal injury or damage to machines around the pump may be caused.

●When the pump is used for an ignitable fluid, ground the pump using the supplied ground wire. If it is operated without grounding, a fire or an explosion may occur, resulting in personal injury or property damage.

●Check that the pump is firmly secured in position.

●Set the pipe on each of the suction and discharge sides. Check that the pipes of the pump are not loose.

●Check that the pneumatic pressure regulator has been set to the min. working pressure.<Min. working pressure: 0.2 MPa>

●Check that the pneumatic lubricator is filled with lubricant <JIS K2213 Class 1 (non-additive turbine oil ISO VG32)>.

2. Checking during test run

3. Checking in operating state

Maintenance (parts)

1. Routine inspection(Inspect the pump every two or three days.)

CAUTION

CAUTION

●Do not run the pump under no load for a long time. Doing so can cause unnecessary wear or trouble.

●The pump shall be maintained by persons with sufficient knowledge and experience.

●Never maintain or inspect the pump during operation. Doing so can cause personal injury.

●Before maintaining or inspecting the pump, stop the supply of pneumatic pressure, and completely discharge pressure from the pump and piping. If there is residual pressure in the pump, personal injury or property damage may be caused.

●Tighten the bolts to the specified torque.If any bolt is tightened to a torque higher or lower than the specified torque, accidents may be caused by nonconformity or rupture.

●Use our genuine replacement parts. If other manufacturers’ parts are used, the pump performance may be degraded, or the pump may malfunction.

●If the pump is kept used without mainte-nance, it may be damaged, machines around it may be broken, or personal injury may be caused.

●We are not responsible for damage, accidents or failures in any case.

●When the discharge flow rate is controlled by adjusting the supply of pneumatic pressure, the allowable specified flow velocity at which the material is sucked into the pump varies depending on the material viscosity, specific gravity and suction head. If the specified flow velocity ratio is exceeded, the pump runs faster, the material causes cavitation, and the discharge flow rate decreases, thereby affecting the life of the diaphragms.

●Even if the pump is kept stopped with the discharge port valve closed while the pump is under pneumatic pressure, it does not cause a hazardous situation. However, if the piping or diaphragm leaks while it is kept in this state for a long time at night or in an unattended state, the pump will start, and the material will be kept discharged from the leaking point. When keeping the pump stopped for a long time, stop the supply of pneumatic pressure, and open the discharge port valve to discharge the residual pressure from the pump and the piping on the discharge side.

●If the pump is kept stopped for a long time with a liquid containing slurry, the slurry will settle and deposit in the pump, and, when it is used next time, the diaphragms may be damaged or a bending torque may be generated on the disk to bend and break the spool. When the pump has been stopped for a long time, clean the inside to completely remove the slurry, and restart the pump.When the pump is not used for a long time, flush the pump with a solvent applicable to the material. Failure to do so may cause material deposition, thereby disabling the pump or significantly degrading its performance.

●Make sure that the pump has been installed correctly and vibrations are absorbed, and check for leakage.

●For test run, gradually increase the supply air pressure from the min. working pressure. After making sure that the pump operates normally, increase the pressure to the set pressure.

WARNING

CAUTION

●If all oil in the pneumatic lubricator at the pneumatic pressure supply port has been used and the pump is not lubricated, operation failure may be caused.

●If oil (machine oil or spindle oil) other than JIS K2213 Class 1 oil (non-additive turbine oil ISO VG32) or its equivalent is used, the seals in the pump may be swelled, thereby affecting the performance and causing operation failure.

Page 5: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

8EF

TDPneum

atic Operated D

iaphragm Pump TD

9EF

For Safe Use Selection Materials

Company name

Idemitsu

Nippon Oil

Cosmo Oil

Showa Shell Sekiyu

TonenGeneral Sekiyu

Japan Energy

Turbine oil P-32

Turbine oil 32

Turbine 32

Turbine oil 32

R turbine oil 32

Turbine oil 32

Turbine oil name

Table of names of non-additive turbine oils (ISO VG32)of various manufacturers

2. Periodic inspection

2) Time for replacement of check balls

3) Time for replacement of valve seats and cartridgeIf they are deformed due to wear, replace them. It is recommended to replace them when replacingthe check balls.

4) RequestReplace the check balls and valve seats when replacing the diaphragms.

*** Estimated time for replacement of each wear part ***

1) Inspection and time of replacement of diaphragms

<How to calculate time for replacement> (*Use the calculated time as a guide.)Example) When the discharge flow rate is 20 ℓ/min and the operating time is 8 hours/day:Discharge flow rate per cycle: approx. 0.17 ℓ/cycle (TD-15**)

Series Discharge flowrate per cycle

TD-08 Approx. 0.04 ℓApprox. 0.17 ℓApprox. 0.32 ℓApprox. 0.57 ℓApprox. 2.4 ℓApprox. 0.6 ℓ

TD-15

TD-20

TD-25

TD-40

TD2-25

*Reference values for metal bodytype pumps

Discharge flow rate (ℓ/min)discharge flow rate per cycle (ℓ)

= = approx. 118 (cycles/min)200.17

Time for replacement= × ×160

18

10,000,000 (cycles)number of operations per min

= × ×10,000,000

118

1

60

1

8=after approx. 177 days

●To lubricate the pneumatic valve parts of the pump, replenish the lubricator at the pneumatic pressure supply port with oil according to the number of times of operation of the pump. ●Periodically discharge the drain and foreign particles

which have collected in the air filter in the pneumatic pressure port. If the drain enters the pump, the oil supplied by the lubricator will be washed away, and the pump performance may be adversely affected. This can cause operation failure.

●The diaphragms, check balls and valve seats are wear parts. It is recommended to replace them when the number of times of use of the pump exceeds the specified number of cycles.

●If the diaphragms are damaged because the pump is not inspected periodically or is inspected late, the liquid will enter the pneumatic circuit in the pump, thereby causing operation failure. In addition, the liquid will be discharged from the exhaust silencer, resulting in bodily injury. Air may be included in the liquid, and unexpected accidents may be caused.

●For the pneumatic lubricator, use JIS K2213 Class 1 oil (non-additive turbine oil ISO VG32) or its equivalent.

CAUTION

The estimated life of the diaphragms is approx. 10 million cycles of operation. (Note: This number of cycles is not a guaranteed value. Inspect and replace the diaphragms using this number as a guide. However, if the liquid contains particles, such as metallic particles, cuttings and hardwearing particles, which can damage the diaphragms, their life will be reduced.)

If the external diameter of the check balls (initial value-TD-08: 12.7 mm, TD-15: 15.9 mm, TD-20: 20.6 mm, TD-25: 25.4 mm, TD-40: 38.1 mm, TD2-25: 34.9 mm) is reduced by 5% or more of the initial value or deformed, the contact between the check balls and the valve seats (sealing ability) is insufficient, and checking failure may occur. In such a case, replace the check balls.

~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Notes on selection

Selection of boreNotes on transferring viscous fluidWhen a viscous fluid is flow, the pump discharge flow rate islower than that for feeding clear water as shown below.

(Notes)

Suction manner

The pump can be used at a suction headof up to 6 m in the case of clear water.Conditions: (clear water temperature 20℃,

viscosity 1 mPa・s, specific gravity 1.0)

The pump can be connected toa tank with a pipe.

Pushing matter

10.2

0.3

0.40.50.6

0.81

2

3

456

810

20

30

405060

80100

2 3 5 7 10 20 30 50 70 100 200 300 500

Friction loss m

Flow rate ℓ/min

3/8

1/2

3/4

11/2

21/2

1/4

1

2

Friction Loss Diagram (for 100 m of straight pipe) [Pipe: steel, Liquid: clear water]

(Clear water: temperature 20℃, viscosity 1 mPa・s, specific gravity 1.0)

Total head

Discharge head

Suction head

Actual suction headActual discharge head

Friction loss on suction side

Friction loss on discharge side

Viscosity〔mPa・S〕(The max. working viscosity of fluid applicable to TD Series is 3000 mPa・s.)

Curve of Drop in Discharge Flow Rate for Viscous Fluid (reference) Range of use

10000

20

40

60

80

100

2000 3000 4000 5000

(Clear water: temperature 20℃, viscosity 1 mPa・s, specific gravity 1.0)

Ratio of discharge flow rate to

that for clear water (100%)

●The pump discharge flow rate significantly varies depending on the quality of the liquid to be flow (viscosity, specific gravity and content of slurry) and transferring conditions (suction head, discharge head, transferring distance, piping diameter, etc.). When selecting the pump, sufficiently consider the piping resistance to the liquid quality, suction head and discharge head.

The pump discharge flow rate is determined by total of head which determined by piping diameter. If the discharge flow rate is not calculated correctly, troubles, such as insufficient flow rate, may be caused. The total head is determined by the friction loss determined by the actual suction head, actual discharge head and piping conditions as shown below. The friction loss varies depending on the piping diameter, length, the fluid average flow velocity, on the number of bends, the shape and number of valves.

●When determining the pump size, select a pump having a capacity of approx. 1.5 times the required discharge flow rate.

●If the piping distance is long and the friction loss is large, use one or two size larger pipes.

●Design the system so that the suction head is 6 m or less in the case of clear water. If the head exceeds 6 m, the discharge flow rate will significantly decrease, and the pump may not discharge the liquid.

●The above curve shows the change in discharge flow rate with viscosity with respect only to the pump. When selecting a pump, sufficiently examine the piping resistance.

●When the pump is installed in a suction manner, a viscous fluid may not be sucked due to increase in piping resistance. In the case of a viscous fluid, it is recommended to install the pump in a pushing manner.

●If the piping friction loss is large, reduce the piping length, or increase the piping diameter.

●The viscosity changes with temperature. Select a pump based on the viscosity at the working temperature.

●If the liquid to be flow has a high viscosity, see “Notes on transferring viscous fluid” for the selection of a pump.

Page 6: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

10EF

TDPneum

atic Operated D

iaphragm Pump TD

11EF

Selection Materials Selection Materials

Determine the total head for pumping clear water at 30 ℓ/minby the circuit with a piping diameter of Rc3/4 as shown above.❶Actual discharge head=8+1=9 m❷Actual suction head=1 m❸Friction loss on discharge side

Then, the piping length on the discharge side=21.5+3.45+0.14=25.09 m d) Friction lossWhen the bore is Rc3/4 and the flow rate is 30 ℓ/min, thefriction loss per 100 m is 29 m from the friction loss diagram.

❹Friction loss on suction sidea)Piping length=(1+1-0.5)+1=2.5 mb)Elbow length corresponding to straight pipe=

0.69×1 pc.=0.69 m (from Table 1)Then, the piping length on the suction side=2.5+0.69=3.19 mWhen the bore is Rc3/4 and the flow rate is 30 ℓ/min, the friction loss per 100 m is 29 m from the friction loss diagram.

❺Total heada) Discharge head=actual discharge head+friction loss on discharge side

Note) Design the circuit so that the suction head is6 m or less (in the case of clear water).

=9+7.28=16.28 mb)Suction head=actual suction head+friction loss on suction side

=1+0.93=1.93 mc)Total head=discharge head+suction head

=16.28+1.93=18.21 m

Total head calculation formulaExample of selection of pump for transferring clear water

Friction loss on discharge side=25.09× =7.28 m29100

29100Friction loss on suction side=3.19 × =0.93 m

Example of determination of pump boreCalculate the pump bore required when the total head is18.21 m and the required discharge flow rate is 30 ℓ/min.

❶Multiply the required discharge flow rate by an allowancerate of 1.5 taking into consideration of allowance for thepump to obtain the discharge flow rate.

Discharge flow rate=required discharge flow rate×1.5=30×1.5=45ℓ/min

Calculation of working pneumatic pressureThen, determine the working pneumatic pressure required to discharge at 30 ℓ/min by the diaphragm pump TD-20.

❶Determine the intersection B of the discharge flowrate of 30 ℓ/min with a total head of 18.21 m.

❷The required pneumatic pressure is approx.0.4 MPa according to the performance curve.

Calculation of air consumption

In the case of clear water (clear water: temperature 20℃, viscosity 1 mPa・s, specific gravity 1.0)

(Clear water: temperature 20℃, viscosity 1 mPa・s, specific gravity 1.0)

Name

90° elbow

45° elbow

Check valve and foot valve

90° bend

45° bend

Sluice valve

Pipe dia.1/4

0.11

0.03

0.10

0.03

0.02

0.02

3/8

0.17

0.05

0.16

0.04

0.03

0.03

1/2

0.39

012

0.36

0.09

0.06

0.08

3/4

0.69

0.21

0.63

0.16

0.11

0.14

1

1.07

0.33

0.98

0.25

0.17

0.21

11/2

2.66

0.82

2.46

0.61

0.43

0.53

2

4.06

1.25

3.75

0.94

0.66

0.81

Table 1Length of Joints and Valves Corresponding to Straight Pipe(Liquid: clear water) Unit: m

21/2

6.58

2.03

6.08

1.52

1.06

1.32

70 700

60

50

40

30

20

10

600

500

400

300

200

100

0 10 20 30 40 50 60 70

Total head m

Discharge flow rate

0.7 MPa

0.7 MPa0.5

0.3

0.3

0.5

Air consumption

ADB

C

Discharge flow rate ℓ/min

Air consumption ℓ/min 〈ANR〉

0.5m0.5m

10m 1m

1m1m

1m

Sluice valve

a) Piping length=1+(8-0.5)+10+1+1+1=21.5 mb) Elbow length corresponding to straight pipe=

0.69×5 pcs.=3.45 m (from Table 1)c) Sluice valve length corresponding to straight pipe=

0.14 m (from Table 1)

A pump having a discharge flow rate of 45 ℓ/min is TD-20 (54 ℓ/min). Determine the intersection A of the total head of 18.21 m with a discharge flow rate of 45 ℓ/min from the performance curve of TD-20. The intersection A is on the left side of the performance curve of working pneumatic pressure of 0.7 MPa. This indicates that the pump meets the discharge flow rate with allowance.

❶Then, determine the required quantity of air. From the point B, draw a vertical line which intersects with the air consumption curves for 0.3 MPa and 0.5 MPa. The intersections are named point C and point D.

❷The intersection C with the curve for 0.3 MPa corresponds to the required amount of air of 150 ℓ/min, and the intersection D for 0.5 MPa corresponds to 260 ℓ/min. Therefore, the required amount of air at 0.4 MPa is 205 ℓ/min.

❸The number of cycles of diaphragm pump varies depending on the liquid temperature, viscosity and specific gravity. Select a compressor taking allowance of about 30% into account. The estimated capacity of compressor is 100 ℓ/min for 0.75 kW. In this case, 205×1.3=266.5 ℓ/min. Therefore, a compressor of 2.2 kW or more must be selected.

1m

8m

1m

PerformanceCurves

TD-08(metal body type)

Note: These performance curves show the discharge flow rates with respect to clear water. (Conditions: temperature 20℃, viscosity 1 mPa・s, specific gravity 1.0)When a viscous liquid is used, the pump flow characteristics will be degraded. When selecting, see the Selection Materials.

TD-15(metal body type)

TD-20(metal body type)

Range of use

0.3

0.3

0.5

0.5

0.7 MPa

Discharge flow rate

Diaphragm material:

Discharge flow rate ℓ/min

Total head m

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

Total head m

Total head m

Total head m

Total head m

Total head m

0.7 MPa

Air consumption Air consumption70

60

50

40

30

20

10

175

150

125

100

75

50

25

20 4 6 8 10 12 14

nitrile rubber, chloroprene rubber, fluorocarbon, ethylene propylene rubber

Diaphragm material:nitrile rubber, chloroprene rubber, fluorocarbon, ethylene propylene rubber

Diaphragm material:nitrile rubber, chloroprene rubber, fluorocarbon, ethylene propylene rubber

0.3

0.5

0.3

0.5

0.7 MPa

Discharge flow rate

Diaphragm material:PTFE

Discharge flow rate ℓ/min

0.7 MPa

70

60

50

40

30

20

10

140

120

100

80

60

40

20

20 4 6 8 10 12 14

0.3

0.3

0.5

0.5

0.7 MPa

Discharge flow rate

Discharge flow rate ℓ/min

0.7 MPa

Air consumptionAir consumption

70

60

50

40

30

20

10

700

600

500

400

300

200

100

50 10 15 20 25 30 35

0.30.5

0.3

0.5

0.7 MPa

Discharge flow rate

Diaphragm material:PTFE

Discharge flow rate ℓ/min

0.7 MPa

70

60

50

40

30

20

10

700

600

500

400

300

200

100

50 10 15 20 25 30 35

Discharge flow rate Air consumption

0.3

0.3

0.5

0.5

0.7 MPa

0.7 MPa

Discharge flow rate ℓ/min

Air consumption

70

60

50

40

30

20

10

700

600

500

400

300

200

100

100 20 30 40 50 60 70

0.30.5

0.3

0.50.7 MPa

Discharge flow rate

Diaphragm material:PTFE

Discharge flow rate ℓ/min

0.7 MPa

70

60

50

40

30

20

10

700

600

500

400

300

200

100

100 20 30 40 50 60 70

Page 7: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

12EF

TDPneum

atic Operated D

iaphragm Pump TD

13EF

Selection Materials Selection Materials

TD-25(metal body type)

TD-40(metal body type)

TD-15(plastic type)Ball check type

Duckbill type

(Semi-standard)

0.3

0.5

0.3 0.5

0.7 MPa

Discharge flow rate

Diaphragm material :

Discharge flow rate ℓ/min

0.7 MPa

Air consumption

Air consumption

70

60

50

40

30

20

10

2100

1800

1500

1200

900

600

300

20 40 60 80 100 120 140

nitrile rubber, PTFE,chloroprene rubber, fluorocarbon,ethylene propylene rubber

Diaphragm material :nitrile rubber, PTFE,chloroprene rubber, fluorocarbon,ethylene propylene rubber

chloroprene rubber,urethane rubber

0.3

0.5

0.3

0.5

0.7 MPaDischarge flow rate

Diaphragm material : PTFE

Diaphragm material :

Discharge flow rate ℓ/min

0.7 MPa

70

60

50

40

30

20

10

500

400

300

200

100

Air consumption

0.3

0.5

0.3

0.5

0.7 MPa Discharge flow rate

(Semi-standard)

Discharge flow rate ℓ/min

0.7 MPa

70

60

50

40

30

20

10

500

400

300

200

100

0 10 20 30 40 50

0 10 20 30 40 50

0.3

0.5

0.3

0.5

0.7 MPaDischarge flow rate

Discharge flow rate ℓ/min

0.7 MPa

Air consumption70

60

50

40

30

20

10

3500

3000

2500

2000

1500

1000

500

0

0

50 100 150 200 250 300 350

Air consumption

0.3

0.5

0.3

0.5

0.7 MPa

Discharge flow rate

Diaphragm material : chloroprene rubber

Discharge flow rate ℓ/min

0.7 MPa

70

60

50

40

30

20

10

500

400

300

200

100

Range of use

PerformanceCurves

Note: These performance curves show the discharge flow rates with respect to clear water. (Conditions: temperature 20℃, viscosity 1 mPa・s, specific gravity 1.0) When a viscous liquid is used, the pump flow characteristics will be degraded. When selecting, see the Selection Materials.

Total head m

Total head m

Total head m

Total head m

Total head m

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

Air consumption ℓ/min 〈ANR〉

0 10 20 30 40 50

TD-25Series(plastic type)Ball check type

■How to read performance curve

Determination of model (bore)Example) Which model should be selected when the total

head is 10 m and the required discharge flow rate is30 ℓ/min? (Nitrile rubber diaphragms are used.)

Answer) ❶Multiply the required discharge flow rate by 1.5taking allowance for the pump into account. Discharge flow rate=required discharge flow rate×1.5

=30×1.5=45ℓ/min❷From the performance curve of TD-20, determinethe intersection of the total head of 10 m with adischarge flow rate of 45 ℓ/min.

❸The intersection is on the left side of theperformance curve for the working pneumaticpressure of 0.7 MPa. This indicates that the model meets the discharge flow rate with allowance.

❹As the result of the above examination, selectTD-20.

1. Fluid to be handled

2. Fluid temperature

3. Required flow rate

4. Heads and conditions

5. Air source

・ Fluid name ・ Concentration ・ Specific gravity ・ PH・ Liquid viscosity(at working temperature) ・ Inclusion of slurry, etc.

Pressure(MPa)・ air capacity(ℓ/min)〈ANR〉[or compressor output (kW)]

Note) If the fluid viscosity varies depending on the temperature,the piping resistance on the suction and discharge sideschanges, and, as a result, the discharge flow rate may change.

℃ ℓ/min

Suction side Suction head (m)Piping diameter (A) and total length (m)

Discharge side Discharge head (m)Piping diameter (A) and total length (m)

Parameters to be checked when placing an order

Diaphragm material :

Air consumption

0.3

0.5

0.3

0.5

0.7 MPa

Discharge flow rate

Range of use

Discharge flow rate ℓ/min

0.7 MPa

70

60

50

40

30

20

10

1000

1200

1400

800

600

400

200

0 17525 15050 75 100 125

PTFE, chloroprene rubber,fluorocarbon

Total head m

Air consumption ℓ/min 〈ANR〉

The performance curve shows the relationship between pump discharge flow rate and head and between discharge flow rate and air consumption. It is possible to determine the required diaphragm pump size and air consumption from the performance curve. (For the calculation of air consumption, see the previous section.)

Page 8: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

14EF

TDPneum

atic Operated D

iaphragm Pump TD

15EF

Selection Materials Selection Materials

Fluid compatibility table (reference)

Body material

Diaphragm materialWetted part

material symbol

Fluid name

Sulfurous acid

Asphalt

Ammonia

Ethyl alcohol (ethanol)

Ethylene oxide

Ethylene glycol

Ethylene chloride (dichloroethane)

Vinyl chloride

Methyl chloride (chloromethane)

Hydrochloric acid

Seawater

Hydrogen peroxide solution

Caustic soda 30%Gasoline

Gasoline (with high acid content)

Xylene (xylol)

Chromium plating solution 25%Sewage water

Ketone

Acetic acid 5 to 20%Acetic acid 50%Acetic acid 80%Ethyl acetate

Vinyl acetate

Butyl acetate

Sodium hypochlorite 20%Heavy oil

Nitric acid 5 to 10%Sodium nitrate

Hydrated lime

Turbine oil

Toluene

Brake oil

Benzene (benzol)

Boric acid

Sulfuric acid 85%Aluminum sulfate

Copper sulfate 10%

Aluminum alloy Metal body

AN

AT

○ ○ ○

AC

AF

AE SN

ST

SC

SF SE

FN FT

FC FF FE

*N : nitrile rubber/*T : PTFE/*C : chloroprene rubber/*F : fluorocarbon/*E : ethylene propylene rubber/*U : urethane rubber

Stainless steel (equivalent to SUS316) Cast iron (only 40 type)

Table of Compatibility between Pump Materials and Fluids(Reference)/Metal body type

Notes)●Some pumps may be unusable depending on the temperature, density, viscosity, concentration and manufacturer of the fluid.●For an abrasive fluid, select an abrasion-resistant type.●For hydraulic fluids not listed above, contact us.

Polypropylene

Plastic body

PT

○ ○ ○

○ ○ ○

○ ○

○ ○

○ ○

PC

○ ○ ○

PU

○ ○

○ ○ ○

PF

○ ○ ○

○ ○

PC-D

○ ○

KT

○ ○ ○

○ ○ ○ ○

○ ○ ○

○ ○

○ ○

KC

○ ○ ○ ○

○ ○ ○

○ ○

○ ○

KU

○ ○

○ ○

KF

○ ○

○ ○ ○ ○

○ ○ ○ ○ ○

*T : PTFE/*C : chloroprene rubber/*F : fluorocarbon/*U : urethane rubber

Polyvinylidene-fluoride

Table of Compatibility between Pump Materials and Fluids(Reference)/Plastic typeFluid compatibility table (reference)

Body material

Diaphragm material

Fluid name(only 15) (only 25) (only 15) (only 25)

Sulfurous acid

Asphalt

Ammonia

Ethyl alcohol (ethanol)

Ethylene oxide

Ethylene glycol

Ethylene chloride (dichloroethane)

Vinyl chloride

Methyl chloride (chloromethane)

Hydrochloric acid

Seawater

Hydrogen peroxide solution

Caustic soda 30%Gasoline

Gasoline (with high acid content)

Xylene (xylol)

Chromium plating solution 25%Sewage water

Ketone

Acetic acid 5 to 20%Acetic acid 50%Acetic acid 80%Ethyl acetate

Vinyl acetate

Butyl acetate

Sodium hypochlorite 20%Heavy oil

Nitric acid 5 to 10%Sodium nitrate

Hydrated lime

Turbine oil

Toluene

Brake oil

Benzene (benzol)

Boric acid

Sulfuric acid 85%Aluminum sulfate

Copper sulfate 10%Notes)●Some pumps may be unusable depending on the temperature, density,

viscosity and concentration of the fluid.●For hydraulic fluids not listed above, contact us.

Wetted partmaterial symbol

Page 9: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

16EF

TDPneum

atic Operated D

iaphragm Pump TD

17EFPneumatic Operated Diaphragm Pump/

Metal Body TypePneumatic Operated Diaphragm Pump/

Metal Body Type

Specifications

Series Body materialMax.

discharge flow rate

TD-08

TD-15

TD-20

TD-25

TD-40

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Cast iron

13r/min

35r/min

54r/min

128r/min

341r/min

Air supplyport size

Range of diameterof solid particles in fluid

Rc1/4

Rc1/4

Rc1/4

Rc1/4

Rc1/2

φ1 mm or less

φ2 mm or less

φ2 mm or less

φ3 mm or less

φ6 mm or less

Weight

1.8kg

3.8kg

4.1kg

7.1kg

5.5kg

11.5kg

8.4kg

15.3kg

19.9kg

33.1kg

34.5kg

Suction port

Rc1/4

Rc1/2

Rc3/4

G1

G11/2

Pump size

Discharge port

Rc1/4

Rc1/2

Rc3/4

G1

G11/2

Notes) ●The table shows the max. discharge flow rates obtained with clear water at an working pneumatic pressure of 0.7 MPa and a head of 0.●In the case of rubber diaphragms

Common specifications●Working pneumatic pressure: 0.2 to 0.7 MPa●Max. working viscosity: 3000 mPa・s●Max. suction head: 6 m (in the case of clear water)●Working temperature range (fluid/ambient temperature): 0 to +60℃ (No freezing)

●Lubrication: Necessary [JIS K2213 Class 1 (non-additive turbine oil ISO VG32) or its equivalent](When using diaphragms made of chloroprene rubber or ethylene propylene rubber, contact us.)

Applicable to a wide range of fluids including organic solvents, slurry liquids, viscous liquids and chemical solutions, such as acid and alkaline solutions●Excellent explosion-proof and fire-proof performance ensures safe operation.

●The pumps do not burn out even under overload.●The discharge flow rate can be easily adjusted.●The self-suction pumps do not require priming water.

●Changeable piping direction

Standard type ■Semi-standard

Mode

l

Pump

size

Body

mat

erial

Diap

hragm

mat

erial

Mode

l

Pump

size

Body

mat

erial

Diap

hragm

mat

erial

Model

TD-08

TD-15

TD-20

TD-25

TD-40

Ball material

Pump size Pump body material

Rc1/8

Rc1/2

Rc3/4

G1

G11/2

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Cast iron

TD-08 to 20

TD-25 to 40

Nitrile rubber

◎ ○ ◎ ○ ◎ ○ ◎ ○ ◎ ○ ◎

Nitrile rubber

Nitrile rubber

PTFE

◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ○ ◎ ○

PTFE

PTFE

Chloroprene rubber

Chloroprene rubber

Chloroprenerubber

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

FluorocarbonEthylene propylene rubber

Santoprene(25 to 40)

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Fluorocarbon

Fluorocarbon(25)Teflon(40)

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Ethylene propylene rubber

Santoprene

Diaphragm material

Note) ◎: Standard ○: Semi-standard

List of Diaphragm Materials

Wear-resistant type

08 Rc1/415 Rc1/220 Rc3/4

Pump size

25 G140 G11/2

N Nitrile rubberPTFEChloroprene rubberFluorocarbonEthylene propylene rubber

TCFENote) For details, see the

following table.

Note) Cast iron F body can beselected only for TD-40.

Diaphragm material

Body material

TD MNA08- -

08 Rc1/415 Rc1/220 Rc3/4

Pump bore

25 G140 G11/2

Pump

type

A Aluminum alloyStainless steelCast iron

SF

Aluminum alloy

Nitrile rubber

Wear-resistant type (Ball material: urethane rubber)(Valve seat material: stainless steel)* For diaphragms made of a material other thannitrile rubber, contact us.

TD 08 NA-

❶ ❷ ❸ ❹

❶ ❷ ❸ ❹ ❺

●How to order

Page 10: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

18EF

TDPneum

atic Operated D

iaphragm Pump TD

19EFPneumatic Operated Diaphragm Pump/

Metal Body TypePneumatic Operated Diaphragm Pump/

Metal Body Type

TD-08(metal body type)

TD-15(metal body type)

TD-20(metal body type)

70

139

4.5 24.5

139 184

84

20

104 20

86

55

100

(67) Rc1/4(Air supply port)Rc1/4(Discharge port)

4-φ7(Mounting holes)

Rc1/4(Suction port)

1.6

2525

Silencer

100

188

118

18

136

6

192 248

35

30 30

108

125

(79) 75Rc1/4(Air supply port)Rc1/2(Discharge port)

4-φ9(Mounting holes)31

Rc1/2(Suction port)

2.3

Silencer

(87) 84

125

150

2.3

218 28625

133.5158.5

120

216

30 30

35

Rc3/4(Discharge port)Rc1/4(Air supply port)

Rc3/4(Suction port)

4-φ11(Mounting holes)37

6

Silencer

TD-25(metal body type)

TD-40(metal body type)

Detailed drawing ofmounting hole

Detailed drawing ofmounting hole

G1 (Discharge port)

G1 (Suction port)

Rc1/4 (Air supply port)

217.5

262

32

10

102

159

186

203

101.5 101.5

165

10

133

318

Earth terminal

SilencerAir exhaust port

Mounting hole(See the right figure.)

14

14

Rc1/2 (Air supply port)

G11/2 (Discharge port)

333 292

229

302

268

397

70

498

194

287

58 58

146 146

5G11/2 (Suction port)

Mounting hole(See the right figure.)

SilencerAir exhaust port

Unit: mm Unit: mm

CAD/DATAis available.TD/TTDA

Page 11: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

20EF

TDPneum

atic Operated D

iaphragm Pump TD

21EFPneumatic Operated Diaphragm Pump/

Plastic TypePneumatic Operated Diaphragm Pump/

Plastic Type

Specifications ◎: Standard

Ball checktype

Ball checktype

Duckbill type

◎TD-15PT

Check method Body(wetted parts) Diaphragm block Check block

Modelnumber

TD-15PC

TD-15PU

◎TD-15KT

TD-15KC

TD-15KU

TD-15PC-D

◎TD-25PT

TD-25PC

TD-25PF

◎TD-25KT

TD-25KC

TD-25KF

Max.discharge flow rate

Pump size(suction port anddischarge port)r/min

42

49

42

49

49

166

NPTWith built-in silencer

1/2

1” flangeANSI 150#

Weight

kg

3.4

4.7

3.4

9.2

12.9

φ1.6mmor less

φ3.0mmor less

Polypropylene

Polyvinylidene-fluoride

Polyvinylidene-fluoride

Polypropylene

Polypropylene

Material Range of diameterof solid particles

in fluid

Air port size

Supply port Exhaust port

PTFE

Chloroprene rubber

Urethane rubber

Chloroprene rubber

Urethane rubber

Chloroprene rubber

Urethane rubber

Chloroprene rubber

Chloroprene rubber Chloroprene rubber

Chloroprene rubber

Fluorocarbon Fluorocarbon

Fluorocarbon Fluorocarbon

Chloroprene rubber

Chloroprene rubber Chloroprene rubber

Urethane rubber

PTFE

PTFE

PTFE

PTFE

PTFE

PTFE

PTFE

NPT1/4

NPT1/4NPT3/8

(With silencer)

●The ◎-marked products are standard type.Note)The table shows the max. discharge flow rates obtained with clear water at an working pneumatic pressure of 0.7 MPa and a head of 0.

Common specifications●Working pneumatic pressure: 0.2 to 0.7 MPa●Max. working viscosity: 3000 mPa・s●Suction head: 6 m (in the case of clear water)●Working temperature range: 0 to +60℃ (No freezing)

Plastic diaphragm pumps suitable for flow viscous fluids and chemicals, such as acid and alkaline liquids●The pumps are more resistant to corrosion caused by acid and alkaline chemicals than metallic pumps.

●The directions of the discharge and suction ports can be freely changed.

●Excellent explosion-proof and fire-proof performance ensures safe operation.

●The pumps do not burn out even under overload.●The discharge flow rate can be easily adjusted.●The self-suction pumps do not require priming water.●The pumps can feed fluids containing fibrous solid. (To feed such fluids, use the duckbill type (semi-standard).)

Standard type ■Semi-standard

Mode

l

Pump

size

Diaph

ragm

mater

ial

Model

TD-15

TD-25

Ball material

Pump size

NPT1/2

1” flange(ANSI Standard)

Pump body material

Polypropylene

Polyvinylidene-fluoride

Polypropylene

Polyvinylidene-fluoride

PTFE

◎ ◎ ◎ ◎

PTFE

○ ○ ○ ○

Chloroprene rubber

○ ○ - -

Urethane rubber

- - ○ ○

Fluorocarbon

Chloroprene rubber Urethane rubber Fluorocarbon

Diaphragm material

Note) ◎: Standard ○: Semi-standard

List of Diaphragm Materials

Duckbill type(semi-standard product)

TD CP15-

15 NPT1/2251” flange

Pump sizeTC

PTFEChloroprene rubberUrethane rubber(only TD-15)Fluorocarbon(only TD-25)

UFNote) For details, see the

following table.

Diaphragm material

Body material(wetted parts)

Mode

l

Pump

size

Diaph

ragm

mater

ial

TD - 15 P C - D

Pump bore NPT1/2

Chec

k met

hod

PK

PolypropylenePolyvinylidene-fluoride

Polypropylene Chloroprene rubber

Duckbill type

Body

mat

erial

Body

mat

erial

❶ ❷ ❸ ❹

❶ ❷ ❸ ❹ ❺

●How to order

Page 12: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TDTD Pneumatic Operated Diaphragm Pump

22EF

TDPneum

atic Operated D

iaphragm Pump TD

23EFPneumatic Operated Diaphragm Pump/

Plastic TypePneumatic Operated Diaphragm Pump/

Plastic Type

TD-15(plastic type)

NPT1/2(Discharge port)

NPT1/2(Suction port)

NPT1/4(Air supply port)

Clamp

191156

124140

164

286205

51

158

9.5

30

89 75132

Detailed drawing ofmounting hole

8

8*The silencer is contained in the body.

●The directions of the discharge and suction portscan be changed by loosening the clamps.

Mounting hole(See the right figure.)

TD-25(plastic type)

Detailed drawing ofmounting hole

11

16

255

108.5182

406

204

160129

13

322

291

60

210

241” flange(ANSI Standard)(Discharge port)

NPT1/4(Air supply port)

2×4-φ16Mounting holes

φ80

1” flange(ANSI Standard)(Suction port)

Clamp

6060

Silencer(NPT3/8) Air exhaust port

●The directions of the discharge and suction portscan be changed by loosening the clamps.

Mounting hole(See the right figure.)

Unit: mm Unit: mm

Page 13: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

TD2TD2 Pneumatic Operated Diaphragm Pump

Pneumatic Operated Diaphragm Pump/Metal body Type24

EFTD2

Pneum

atic Operated D

iaphragm Pump TD2

Pneumatic Operated Diaphragm Pump/Metal body Type 25

EF

Unit: mm

CAD/DATAis available.TD2/TTD2A

Body mate

rial

Pump

size

Model

How to Order

NA25- -TD2

NNitrile rubberPTFET

V

Diaphr

agm ma

terial

When placing an order, specify the model number shown below.

SpecificationsAluminum alloy

Stainless steel

Max. discharge flow rate

Max. working viscosity

Max. suction head

Working pressure range

Working temperature range

Pump size

Air supply port size

Range of diameter of solid particles in fluid

Body material

Diaphragm material

Ball material

Weight

Approx. 160 ℓ/min

3000 mPa・s

6 m max. (in the case of clear water) (PTFE type: 3 m max.)

0.2 to 0.7 MPa

0 to +60℃ (No freezing)

Rc1

Rc3/8

f3mm or less

Aluminum alloy/stainless steel

TD2-25AN

TD2-25SN

Nitrile rubber Nitrile rubber

Nitrile rubber Urethane rubber

PTFE

PTFE

TD2-25AN-M(wear-resistant type)

TD2-25SN-M(wear-resistant type)

TD2-25AT

TD2-25STModel

Aluminum alloy: approx. 14 kg Stainless steel: approx. 25 kg

Rc1

A Aluminum alloyStainless steelS

A Aluminum alloyStainless steelS

Semi-standard

Standard type

- MNA25-TD2

Wear-resistant type

V

Rc1

Wear-resistant type

Piping

direction

Nitrile rubber(Ball material: urethane rubber)

Piping direction

●Horizontal piping(standard) ●Vertical piping(option)

Rc1 Discharge port

Rc1 Suction port

Rc1 Discharge port

Rc1 Suction port

TD2-25*T TD2-25*N TD2-25*N-M

TD2-25*T-V TD2-25*N-V TD2-25*N-MV

None Horizontal piping(standard)

None Horizontal piping(standard)V Vertical piping (option)

V Vertical piping (option)

●Significantly increased discharge flow rate (higher by 25% compared to our conven-tional products)●Wider range of piping direction●Improved maintainability●Use of cartridge type check valve●Easily detachable bolt-on type air valve

❶ ❷ ❸ ❹ ❺

New type diaphragm pumps with increased discharge flow rate and improved maintainability

Dimensional Drawings

TD2-25

Performance Curves

Note: These performance curves show the discharge flow rates with respect to clear water. (Conditions: temperature 20℃, viscosity 1 mPa・s, specific gravity 1.0)

When a viscous liquid is used, the pump flow characteristics will be degraded. When selecting, see the Selection Materials.

(Mounting holes)

205283

160

4-M10 depth 18 21

17556

200

40 60

Rc3/8 Air supply port

Rc1/2 Exhaust port (With silencer)

28

28

50

294

25

344

219

2-Rc1/8 Pressure detection ports (With plug)

4-φ11

3

111 122

233

380

Rc1 Suction port

Rc1 Discharge port

70

60

50

40

30

20

10

0

1400

1200

1000

800

600

400

200

0160140120100806040200

70

60

50

40

30

20

10

0

1400

1200

1000

800

600

400

200

0160140120100

Discharge flow rate R/min Discharge flow rate R/min*Notes on selectingSelect a pump based on the requiredflow rate multiplied by 1.5.

806040200

Total head m

Total head m

Air consumption R/min〈ANR〉

Air consumption R/min〈ANR〉

0.7 MPa 0.7 MPa

0.5 MPa

0.3 MPa

0.3 MPa

0.5 MPa

Air consumptionDischarge flow rate

0.7 MPa

0.3 MPa

0.3 MPa

0.7 MPa

0.5 MPa0.5 MPa

Air consumptionDischarge flow rate

Diaphragm material: nitrile rubber Diaphragm material: PTFE

Page 14: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

26EF

ETD2Electric D

iaphragm Pump ETD

227EF

・To substitute for pneumatic operated diaphragm pump to reduce the running cost

・To use an environmentally-friendly pump

・To transfer a liquid containing slurry

・To pump a liquid from a tank with a self-suction pump

・To quickly adjust the discharge flow rate

・To electrically control the discharge flow rate

・To obtain a stable discharge flow rate regardless of fluctuation in pneumatic pressure and load

Electric diaphragm pump ETD2 Series have been widely used and highly evaluated in various industrial fields.

Features of Electric Operated Diaphragm Pump

Examples of Application of Electric Operated Diaphragm Pump

We recommend our electric operated diaphragm pump ETD2 Series.We recommend our electric operated diaphragm pump ETD2 Series.

Industry

Printing

Buildingmaterials

Automobile

Consumerelectronics

Ceramic

Industrial waste

Reasons for applicationEnergy conservation and controllability

Energy conservation and controllability

CO2 reduction and controllability

Energy conservation and controllability

Controllability

CO2 reduction and controllability

Use

Transfer of inks

Transfer of paints for plywood (floor and wall materials)Compressed discharge flow of adhesives

Compressed discharge flow of lubricant and cutting oilCompressed discharge flow of parting agents

Compressed discharge flow of magnetic fluids for recording media, such as tape

Compressed discharge flow of tile glaze

Compressed discharge flow of waste oil and waste liquid

Reduction by approx. 81%,¥58,640

Reduction by approx. 85%,¥76,640

Reduction by approx. 89%,2.37 t

Reduction by approx. 89%,2.37 t

Operating time: continuous 8 hours/day, number of operating days: 250 days/year, yearly power consumption: 16.7 yen/kWh (researched by us), compressed air cost: 2.5 yen/m³, CO2 emission: 1 kWh/h=0.36 kg (0.00036 t) Reference) Per capita CO2 emission in Japan: 2.4 t (researched by us)

①Operating conditions: flow rate 16 ℓ/min, discharge pressure 0.4 MPa

Electric diaphragm pump → ETD2-2004AT-17 (at 60 Hz)Pneumatically-driven diaphragm pump → TD-20AT (air consumption 240 ℓ/min) → Compressor output 3.7 kW

②Operating conditions: flow rate 26 ℓ/min, discharge pressure 0.4 MPa

Electric diaphragm pump → ETD2-2004AT-11 (at 60 Hz)Pneumatically-driven diaphragm pump → TD-20AT (air consumption 300 ℓ/min) → Compressor output 3.7 kW

Conditions of comparison

Comparison of Running Cost and Carbon Dioxide Emission

Comparison of running cost (yearly)

In the case of TD-20AT (pneumatic)Air consumption: 240 ℓ/min240 ℓ/min×60 min×8 hrs/day=115200 ℓ/day (115.2 m³)115.2 m³×250 days=28800 m³/year

28800 m³×2.5 yen/m³=72,000yen/year

In the case of ETD2-2004AT-17 (electric)Output: 0.4 kW, 60 Hz0.4 kW×8 hrs/day=3.2 kWh/day3.2 kWh/day×16.7 yen/kWh=53.44 yen/day

53.44 yen/day×250 days=13,360yen/year

Comparison of running cost (yearly)

In the case of TD-20AT

90,000yen/yearIn the case of ETD2-2004AT-11

13,360yen/year

Comparison of carbon dioxide emission (yearly)

In the case of TD-20AT

2.66tIn the case of ETD2-2004AT-11

0.29t

Comparison of carbon dioxide emission (yearly)

In the case of TD-20AT (pneumatic)Compressor output: 3.7 kW or more3.7 kW×8 hrs/day=29.6 kWh/day

29.6 kWh/day×250 days×0.00036 t=2.66t

In the case of ETD2-2004AT-17 (electric)Output: 0.4 kW, 60 Hz0.4 kW×8 hrs/day=3.2 kWh/day

3.2 kWh/day×250 days×0.0036 t=0.29t

Electric Operated Diaphragm PumpFeatures/Examples of Application

Electric Operated Diaphragm PumpComparison of Running Cost and CO2 Emission

Page 15: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

28EF

ETD2Electric D

iaphragm Pump ETD

229EF

Reduction by approx. 82%,¥112,950

Reduction by approx. 86%,3.42t

③Operating conditions: flow rate 45 ℓ/min, discharge pressure 0.4 MPa

Electric diaphragm pump → ETD2-2507AT-17 (at 60 Hz)Pneumatically-driven diaphragm pump → TD-25AT (air consumption 460 ℓ/min) → Compressor output 5.5 kW

Comparison of Discharge Pressure Fluctuation with Pneumatic Operated Diaphragm Pump

Comparison of running cost (yearly)

In the case of TD-25AT

138,000yen/yearIn the case of ETD2-2507AT-17

25,050yen/year

Comparison of carbon dioxide emission (yearly)

In the case of TD-25AT

3.96tIn the case of ETD2-2507AT-17

0.54t

Reduction by approx. 80%,¥204,900

Reduction by approx. 85%,6.12t

④Operating conditions: flow rate 72 ℓ/min, discharge pressure 0.4 MPa

Electric diaphragm pump → ETD2-2515AT-11 (at 60 Hz)Pneumatically-driven diaphragm pump → TD-25AT (air consumption 850 ℓ/min) → Compressor output 10.0 kW

The electric diaphragm pumps ensure more stable discharge power with less discharge pressure fluctuation compared to pneumatically-driven diaphragm pumps.

Comparison of running cost (yearly)

In the case of TD-25AT

255,000yen/yearIn the case of ETD2-2515AT-11

50,100yen/year

Comparison of carbon dioxide emission (yearly)

In the case of TD-25AT

7.20tIn the case of ETD2-2515AT-11

1.08t

Discharge pressure difference

Discharge pressure fluctuation is reduced!!

Discharge pressure waveform of pneumatically-driven diaphragm pump

Discharge pressure waveform of electric diaphragm pump

Discharge pressure difference

Model Configuration

Standard type

Separate type

ETD2-2004 Series ETD2-2507 Series ETD2-2515 Series

ETD2-2004 Series ETD2-2507 Series ETD2-2515 Series

Pump size: Rc3/4(20A)Motor output: 0.4 kWMax. discharge flow rate: 18 ℓ/min(ETD2-2004*T-17)Separate type: 29 ℓ/min(ETD2-2004*T-11)

Pump size: Rc1(25A)Motor output: 0.75 kWMax. discharge flow rate: 59 ℓ/min

Pump size: Rc1(25A)Motor output: 1.5 kWMax. discharge flow rate: 120 ℓ/min

Pump size: Rc1(25A)Motor output: 1.5 kWMax. discharge flow rate: 120 ℓ/min

Pump size: Rc3/4(20A)Motor output: 0.4 kWMax. discharge flow rate: 18 ℓ/min(ETD2-2004*T-17)Max. discharge flow rate: 29 ℓ/min(ETD2-2004*T-11)

Pump size: Rc1(25A)Motor output: 0.75 kWMax. discharge flow rate: 59 ℓ/min

Electric Operated Diaphragm PumpComparison of Discharge Pressure Fluctuation with Pneumatically-driven Diaphragm Pump Electric Operated Diaphragm Pump

Page 16: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

30EF

ETD2Electric D

iaphragm Pump ETD

231EF

For WARNINGS and CAUTIONS in this section, the following definitions and signal words are used. The precautions marked with these signal words are to be followed to use the product safely. Important requirements are stated to prevent possible personal injury and property damage. Observe these instructions without fail.

WARNING:

WARNING

CAUTION:

Improper handling of the product will cause a hazardous situation which can result in death or serious personal injury and property damage.

Improper handling of the product will cause a hazardous situation which may result in moderate or minor personal injury and property damage.

◆These products have been designed and manufactured as general industrial machine parts.

◆Strictly observe the warnings, cautions and prohibited acts stated in this catalog. Failure to do so may damage the product or machines around it or cause personal injury.

◆If the diaphragms are damaged, the fluid may spout from the drain port through the body, resulting in seriously hazardous situations depending on the properties of the fluid.

◆When using a fluid which may cause personal injury or property damage, take appropriate protective measures (e.g. piping of drain port), and strictly observe the following instructions.

◆When the pump is used in an atmosphere which can cause spontaneous ignition or used to transfer or circulate a highly flammable fluid at a high speed or to clean with such a fluid, human bodies may receive a shock due to electrostatic spark, ignition or heat generation, or personal injury and property damage may be caused by fire or explosion. Be sure to ground the pump using the supplied ground wire and ventilate the working area in accordance with the specified conditions of working environment.

◆Be sure to use the pump within the specified working frequency range and working current range. If it used out of the working frequency or current range, it may be damaged, thereby causing personal injury or property damage.

◆Never use a fluid inapplicable to the materials of the pump wetted parts or an explosive solution. If such a fluid is used, a chemical change accompanied with very hazardous explosion may be caused, resulting in personal injury including death and damage to building and equipment.

◆Fluids which corrosion or damage occur to the materials of the wetted parts in the body or the diaphragms must not be used. Use a model which has been proved to be appropriate. If an inappropriate model is used, fluid leakage or breakage may be caused. For the compatibility with fluids, contact our sales offices.

◆Before using the pump every day, check for fluid leakage from the pump. If any abnormality is found, do not use it, and ask us to inspect and repair it.

◆Service the wear parts, such as the diaphragms, earlier. Do not use them longer than the time for replacement shown in the “Maintenance” section. Do not use any unused wear part which has been stored for more than 1 year after it was purchased. Aging deterioration may have occurred.

◆If any abnormality is found in the operation of the pump, do not operate it, and contact our sales office.

◆When handling any toxic or smelly fluid, sufficiently ventilate the working area.

◆Do not discharge the handled harmful substances, such as chemicals, directly to the ground. Dispose of the harmful substances in accordance with applicable laws and regulations.

◆If the pump operating time and frequency is increased, replace the wear parts, such as the diaphragms, earlier.

Installation

WARNING◆The motor is not explosion-proof. When the pump is used in an atmosphere which can cause spontaneous ignition or used to transfer or circulate a highly flammable fluid at a high speed or to clean with such a fluid, take great care. (For the explosion-proof type, consult us.) Be sure to ground the pump using the supplied ground terminal and ventilate the working area in accordance with the specified conditions of working environment. Failure to do so may cause fire or explosion, resulting in personal injury or property damage.

◆Prevent transmission of load or vibration to the pump body through the piping. Material leakage or entry of pneumatic pressure to the material may be caused, and personal injury or property damage may occur depending on the type of material.

CAUTION◆To connect the pump on the suction and discharge sides, use hoses or flexible tubes which can absorb the pump vibrations.

◆Never step on or hang on the diaphragm pump. Doing so may cause injury and damage the pump.

◆The suction head should be as low as possible. The maximum head is approx. 6 m (in the case of clear water).

◆Carefully select the installation place, and install the pump by an appropriate method to absorb vibrations.

(1) Installation place: Install the pump horizontally. Avoid using it on a slope.

(2) Installation direction: Install the pump with the arrow   on the cover upward.

(3) Installation method: Surely tighten the mounting accessories so that the pump and pipes will not be damaged by vibrations.

◆The fluid discharge port can be positioned in the opposite direction.

1. Notes on installation The installation condition affects the product life. Observe the following instructions.

CoverArrow

Electric Operated Diaphragm PumpFor Safe Use

Electric Operated Diaphragm PumpFor Safe Use

Page 17: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

32EF

ETD2Electric D

iaphragm Pump ETD

233EF

◆Select the piping material in consideration of appropriate size, resistance to liquid and pressure resistance. If an inappropriate model is used, fluid leakage or breakage may be caused.

◆Before piping, flush the pipes. Take care that cuttings, sealing tape fragments, dirt and rust never enter the piping. They can cause operation failure.

◆Pipe the pump appropriately so that lateral load will not be applied to the pump body. Application of lateral load can damage the threaded portions of the suction and discharge ports and cause troubles, such as sealing failure.

◆To connect the pump on the suction and discharge sides, use hoses or flexible tubes which can absorb the pump vibrations.

◆Use pipes which are not deformed by the negative pressure caused by pump suction.

◆Do not use pipes thinner than the discharge and suction ports. If the piping diameter is small, sufficient performance cannot be obtained.

◆Fit a filter or a strainer on the suction side to protect the pump.

◆Pipe the drain port without fail. If the diaphragms are damaged, the fluid may spout from the drain port through the body, resulting in seriously hazardous situations depending on the properties of the fluid.

◆Do not work with current on wires. Before working, be sure to disconnect power. Failure to do so may cause electric shock.

◆Connect the power cable in accordance with the wiring diagram in the terminal box or the following inverter wiring specifications. Failure to do so may cause electric shock or fire.

◆Do not forcibly bend, pull or pinch the power cable or motor lead wires. It may cause electric shock or fire.

◆Surely ground the ground terminal. Failure to do so may cause electric shock.

◆Example of inverter wiring specifications

2. Notes for piping (connection of suction and discharge ports)

3. Notes on wiring (connection of power supply)

For details, see the Instruction Manual.

Inverter

Connect the powersupply wires toR, S and T.

Connect the motorwires to U, V and W.

Motor

E

Power supply

No-fusebreaker

or or

R/L1 S/L2 T/L3 U/T1 V/T2 W/T3

CAUTION

WARNING

CAUTION

CAUTION

CAUTION

Operation

◆Make sure that the rated voltage of the product is identical to the AC power supply voltage. If they are not identical with each other, personal injury or fire may be caused.

◆Wire the pump in accordance with the electric maintenance engineering standards and internal wiring regulations. Failure to do so may cause burnout, electric shock, personal injury or fire.

◆The motor is not provided with a protective device. The electric maintenance engineering standards oblige to install an overload protective device. It is recommended to install a protective device (earth leakage circuit breaker, etc.) in addition to the overload protective device. Failure to do so may cause burnout, electric shock, personal injury or fire.

◆Connect the electric cable with a crimp-style terminal. Sufficiently insulate the connected parts with insulating tape.

◆When measuring the insulation resistance, do not touch any terminal. Failure to do so may cause electric shock.

◆Check that the product has been correctly installed and the mounting bolts are not loose. If the pump is operated with mounting bolts loosened, personal injury or damage to machines around the pump may be caused.

◆When the pump is used for an ignitable fluid, ground the pump using the supplied ground wire. If it is operated without grounding, a fire or an explosion may occur, resulting in personal injury or property damage.

◆Check that the pump has been wired correctly and surely. Failure to do so may cause burnout, electric shock, personal injury or fire.

◆Check that the pump is firmly secured in position.

◆Set the pipe on each of the suction and discharge sides. Check that the pipes to the pump are not loose.

◆Check that the control inverter has been set within the working frequency range.

◆Check that the control inverter has been set to the minimum working frequency.

◆Do not run the pump under no load for a long time. Doing so can cause unnecessary wear or trouble.

◆Check that the pump has been correctly installed, vibration is absorbed, and it does not leak.

◆Check that the pump does not cause abnormal noise or vibration and the motor surface temperature is not abnormally high.

◆For test run, gradually increase the inverter frequency from the minimum working frequency. After making sure that the pump operates normally, increase the frequency to the set frequency.

1. Checking before operation

2. Checking during test run

Electric Operated Diaphragm PumpFor Safe Use

Electric Operated Diaphragm PumpFor Safe Use

Page 18: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

34EF

ETD2Electric D

iaphragm Pump ETD

235EF

WARNING

WARNING

WARNING

Maintenance

◆During operation, never open the pump front plate to access or touch any internal rotating part. Your fingers may be involved with the part and injured.

◆If the power goes out, be sure to turn off the power switch. If operators are not aware of when the power comes back on, electric shock, personal injury or damage to the equipment may occur.

◆Do not operate the pump without the terminal box cover. It may cause electric shock.

◆When the discharge rate is controlled by adjusting the frequency, the allowable specified flow velocity at which the material is sucked into the pump varies depending on the material viscosity, specific gravity and suction head. If the specified flow velocity ratio is exceeded, the pump runs faster, the material causes cavitation, and the discharge rate decreases, thereby affecting the life of the diaphragms.

◆Adjust the flow rate with the inverter. Do not adjust it with a valve connected directly to the discharge piping. Never fully close the valves. During operation and before starting operation, check that the valves are open.

◆Use ETD2-2004*T-17 Series in the frequency range of 20 to 70 Hz, ETD2-2004*T-11 Series in the range of 30 to 70 Hz, ETD2-2507 Series in the range of 20 to 80 Hz and ETD2-2515 Series in the range of 20 to 100 Hz.

◆At a frequency from 20 to 60 Hz, use the pump at a current less than the motor rated current. At more than 60 Hz, use it within 90% of the rated current. Failure to do so may cause burnout, electric shock, personal injury and fire.

◆If the pump is kept stopped for a long time with a liquid containing slurry, the slurry will settle and deposit in the pump, and, when it is used next time, the diaphragms may be damaged or a bending torque may be generated on the disk to bend and break the cam ring. When the pump has been stopped for a long time, clean the inside to completely remove the slurry, and restart the pump. When the pump is not used for a long time, flush the pump with a solvent applicable to the material. Failure to do so may cause material deposition, thereby disabling the pump or significantly degrading its performance.

◆During operation, the motor is considerably hot. Take care that your hands or body do not get into contact with it, or you may burn yourself.

◆If any abnormality occurs, stop the pump. Failure to do so may cause burnout, personal injury or fire.

3. Checking in operating state

◆The pump shall be maintained by persons with sufficient knowledge and experience.

◆Never maintain or inspect the pump during operation. Doing so may cause injury accidents.

◆Do not maintain or inspect the pump with current on wires. Before working, be sure to disconnect power. Failure to do so may cause electric shock.

◆Tighten the bolts to the specified torque. If any bolt is tightened to a torque higher or lower than the specified torque, accidents may be caused by nonconformity or rupture.

◆Use our genuine replacement parts. If other manufacturers’ parts are used, the pump performance may be affected, or the pump may malfunction.

◆If the pump is kept used without maintenance, it may be damaged, machines around it may be broken, or personal injury may be caused.

◆We are not responsible for damage, accidents or failures in any case.

CAUTION◆Before lubricating the pump, disconnect the power. Failure to do so may cause personal injury.

◆When measuring the insulation resistance, take care not to touch any terminal. Failure to do so may cause electric shock.

◆During operation, the motor is considerably hot. Take care not to touch them with bare hands, or you may burn yourself.

◆To lubricate the pump, open the front plate. Periodically pour grease through the grease nipple.

◆As a lubricating grease, use Daphne Eponex EP-No.1 (Idemitsu Kosan) grease for high load or its equivalent.

◆The diaphragms, check balls and valve seats are wear parts. It is recommended to replace them when the specified number of times of operation is exceeded.

1. Daily inspection and maintenance

1) Inspection and time of replacement of diaphragmsThe estimated life of the diaphragms is approx. 10 million cycles of operation. (Note: This number of cycles is not a guaranteed value. Inspect and replace the diaphragms using this number as a guide. However, if the liquid contains particles, such as metallic particles, cuttings and hardwearing particles, which can damage them, their life will be reduced.)

<How to calculate time for replacement> (*Use the calculated time as a guide.)

 Example) When Model EDT2-2004*T-17 is used at a frequency of 60 Hz (approx. 106 cycles/min) for operating time of 8 hours/day:

2) Time for replacement of check ballsIf the external diameter of the check balls (initial value: 20.6 mm or 39.4 mm) is reduced by 5% or more of the initial value or deformed, the contact between the check balls and the valve seats (sealing ability) is insufficient, and checking failure may occur. In such a case, replace the check balls.

3) Time for replacement of valve seats and cartridgeIf they are deformed due to wear, replace them. It is recommended to replace them when replacing the check balls.

4) RequestReplace the check balls and valve seats when replacing the diaphragms.

2. Estimated time for replacement of each wear part

Discharge rate per cycle

=Time forreplacement =× ×

Discharge rate (ℓ/min)number of cycles per min (cycles/min)

13106

approx. 0.15 (ℓ/cycle)==

10,000,000 (cycles)number of cycles per min

160

18

=× ×10,000,000106

160

18

Model number Check ball external diameter Number of cycles (at 60 Hz)

Reference values:

ETD2−2004*T−17

ETD2−2004*T−11

ETD2−2507*T−17

ETD2−2515*T−11

20.6 mm

20.6 mm

34.9 mm

34.9 mm

after approx.196 days

Approx. 106 cycles/min

Approx. 158 cycles/min

Approx. 106 cycles/min

Approx. 158 cycles/min

Electric Operated Diaphragm PumpFor Safe Use

Electric Operated Diaphragm PumpFor Safe Use

Page 19: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

36EF

ETD2Electric D

iaphragm Pump ETD

237EF

Model number

Body material

PTFE

0.4 MPa

0 to +60℃

0 to +40℃

φ2 mm or less

200 V 50/60 Hz  220 V 60 Hz

IP44 (indoors), totally-enclosed fan-cooled type

Class E

Rc 3/4(20 A)

0.4 Kw

2.0 A

Rc 1(25 A)

0.75 Kw

3.4 A

30 to 70 Hz

Approx. 0.16 ℓ/min

20 to 70 Hz

Approx. 0.15 ℓ/min

1.5 Kw

6.2 A

20 to 80 Hz

Approx. 0.43 ℓ/min

20 to 100 Hz

Approx. 0.44 ℓ/min

ETD2-2004AT-17

Aluminum alloy

ETD2-2004ST-17

Stainless steel

ETD2-2004AT-11

Aluminum alloy

ETD2-2004ST-11

Stainless steel

ETD2-2507AT-17

Aluminum alloy

ETD2-2507ST-17

Stainless steel

ETD2-2515AT-11

Aluminum alloy

ETD2-2515ST-11

Stainless steel

Standard Specifications

Diaphragm/ball material

Max. discharge pressure

Pump size

Working fluid temperature range

Ambient temperature

Range of diameter of solid particles in material

Power supply

Motor output

Rated current *Motor specification

Protective structure/enclosure structure

Insulation class

Working frequency range(inverter control range)

Discharge rate per cycle*(at 60 Hz and discharge pressure of 0.4 MPa)

●Select a pump based on the required flow rate multiplied by 1.5.●Carefully read the Instruction Manual, and take care not to operate the pump incorrectly.

*The rated current of the motor is shown. Use the pump within the inverter control range.*The values of discharge rate per cycle are shown for your reference. The discharge rate varies depending on the fluid viscosity.

●Adjust the flow rate by controlling the rotation speed of the motor using the inverter.Never control the flow rate using a valve on the discharge piping.●Use the pump at a discharge pressure less than the max. discharge pressure and within the working frequency range shown in the above table.When using the pump at a pressure exceeding the max. discharge pressure or out of the working frequency range, consult us.

Excellent ECO effect!Next-generation models of diaphragm pumps are launched.●The running cost and CO2 emission can be reduced by approx.80% (compared to our conventional products).●Equipment cost and running cost can be reduced, thereby promoting energy savings.●No exhaust, and low noise. Usable in clean environment.●The discharge rate is stable because the motor-driven pumps are not affected by load fluctuation.

●The inverter control enables a wide-range flow adjustment.●Increased safety explosion-proof models and pressure-resistant explosion-proof models is available.

●Separate types excelling in maintainability is available.

(ℓ/min)

Discharge flow rate

Model❶

Pump

size❷

Motor output❸

Body material❹

Diaphrag

m ma

terial❺

Deceleration

ratio❻

Mounting me

thod❼

Explo

sion-p

roof type❽

Inverter sym

bol❾

140

120

100

80

60

40

20

0

AETD2 --20 04 E 1T 17 S

PTFE

25

20 Rc 3/4 (at 0.4 kW)Rc 1 (at 0.75 or 1.5 kW)

S

A Aluminum alloyStainless steel

1

Without inverterWith inverter

None

Standard type

07

04 0.4 kW

0.75 kW

15 1.5 kW

17 At motor output of 0.4 kW11 At motor output of 0.4 kW17 At motor output of 0.75 kW11 At motor output of 1.5 kW

S Separate type (semi-standard product)

Standard

None

None

E

D

Explosion-proof(Increased safety type: class eG3)Explosion-proof(Flame-proof type: class d2G4)

Guidelines for Selection

When selecting a pump in ETD2 Series, use the following chart as a guide.

ETD2-2004AT-17

*Select a model based on the required flow rate multiplied by 1.5.*The above chart shows the flow rate of clear water.

70Hz

20Hz

70Hz

30Hz

80Hz

20Hz

100Hz

20Hz

ETD2-2004AT-11 ETD2-2507AT-17 ETD2-2515AT-11

■Semi-standard

Electric Operated Diaphragm Pump Electric Operated Diaphragm Pump

●How to order

Page 20: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

38EF

ETD2Electric D

iaphragm Pump ETD

239EF

Unit: mm Unit: mm

Rc3/8Drain port

4-φ11(Mounting holes)

Rc3/4(Discharge port)

218

5384

49

190

298

84 28049

220385

Rc3/4(Suction port)3.2

189 (332)(521)

39

Rc3/8Drain port

4-φ11(Mounting holes)

Rc3/4(Suction port)

Rc3/4(Discharge port)

218

5384

49

190

298

84 28049

220385

(75)

(343)

3.2

189 (399)(588)

39

39

Rc3/8Drain port

4-φ11(Mounting holes)

Rc3/4(Discharge port)

218

5384

49

190(32)

298

84 28049

220385

Rc3/4(Suction port)

3.2

(300)

189 (378)(567)

ETD2-2004*T-17 Performance Table

ETD2-2004*T-17 (standard) Weight AT:35kg/ ST:41kg

ETD2-2004*T-17-E(Increased safety type: class eG3)Weight AT:37kg/ ST:43kg

ETD2-2004*T-17-D(Flame-proof type: class d2G4)Weight AT:46kg/ ST:52kg

Discharge flow rate (ℓ/min) Discharge pressure(MPa)

05811

203040

Frequency(Hz) 0.1

5811

0.25810

0.35710

0.447

10

Discharge flow rate (ℓ/min) Discharge pressure(MPa)

0141720

506070

Frequency(Hz) 0.1

131719

0.2131619

0.3131618

0.4121618

■Standard Type

60

(639)500380

350310

44.5

218

358

64

147.5

60

6

Rc3/8Drain port

Rc3/4(Suction port)

Safety cover

4-φ15(Mounting holes)

Rc3/4(Discharge port)

350310

44.5

218

358

64

147.5

60

(685)500380 60

6

Safety cover

4-φ15(Mounting holes)

Rc3/8Drain port

Rc3/4(Discharge port)

Rc3/4(Suction port)

60

(706)500380

350310

44.5

218

358

64

147.5

60

(23)

6

Safety cover

4-φ15(Mounting holes)

Rc3/8Drain port

Rc3/4(Discharge port)

Rc3/4(Suction port)

ETD2-2004*T-17-S (standard) Weight AT:57kg/ ST:63kg

ETD2-2004*T-17-SE(Increased safety type: class eG3)Weight AT:59kg/ ST:65kg

ETD2-2004*T-17-SD(Flame-proof type: class d2G4)Weight AT:68kg/ ST:74kg

■Separate Type

Electric Operated Diaphragm PumpETD2-2004*T-17 Series

Electric Operated Diaphragm PumpETD2-2004*T-17 Series

Page 21: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

40EF

ETD2Electric D

iaphragm Pump ETD

241EF

Unit: mm Unit: mm

ETD2-2004*T-11 (standard) Weight AT:35kg/ ST:41kg

ETD2-2004*T-11-E(Increased safety type: class eG3)Weight AT:37kg/ ST:43kg

ETD2-2004*T-11-D(Flame-proof type: class d2G4)Weight AT:46kg/ ST:52kg

ETD2-2004*T-11 Performance TableDischarge flow rate (ℓ/min)

Discharge pressure(MPa)0141925

304050

Frequency(Hz) 0.1

131823

0.2121722

0.3121721

0.4121621

Discharge flow rate (ℓ/min) Discharge pressure(MPa)

03036

6070

Frequency(Hz) 0.1

2832

0.22731

0.32730

0.42629

■Standard Type

Rc3/8Drain port

4-φ11(Mounting holes)

Rc3/4(Discharge port)

218

5384

49

190

298

84 28049

220385

Rc3/4(Suction port)3.2

189 (332)(521)

39

39

Rc3/8Drain port

4-φ11(Mounting holes)

Rc3/4(Discharge port)

218

5384

49

190(32)

298

84 28049

220385

Rc3/4(Suction port)3.2

(300)

189 (378)(567)

Rc3/8Drain port

4-φ11(Mounting holes)

Rc3/4(Suction port)

Rc3/4(Discharge port)

218

5384

49

190

298

84 28049

220385

(75)

(343)

3.2

189 (399)(588)

39

ETD2-2004*T-11-S (standard) Weight AT:57kg/ ST:63kg

ETD2-2004*T-11-SE(Increased safety type: class eG3)Weight AT:59kg/ ST:65kg

ETD2-2004*T-11-SD(Flame-proof type: class d2G4)Weight AT:68kg/ ST:74kg

■Separate Type

64

44.5

218

358

310350

380500

(639)

147.5

60 60

6

Safety cover

Rc3/8Drain port

Rc3/4(Suction port)

Rc3/4(Discharge port)

4-φ15(Mounting holes)

60500380

350310

44.5

64

147.5

60

(685)

6

218

358

Rc3/8Drain port

4-φ15(Mounting holes)

Rc3/4(Discharge port)

Rc3/4(Suction port)

Safety cover

60500380

350310

44.5

218

358

64

147.5

60

(706)(23)

6

Rc3/8Drain port

Rc3/4(Discharge port)

Rc3/4(Suction port)

Safety cover

4-φ15(Mounting holes)

Electric Operated Diaphragm PumpETD2-2004*T-11 Series

Electric Operated Diaphragm PumpETD2-2004*T-11 Series

Page 22: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

42EF

ETD2Electric D

iaphragm Pump ETD

243EF

Unit: mm Unit: mm

ETD2-2507*T-17 Performance TableDischarge flow rate (ℓ/min)

Discharge pressure(MPa)015233141

20304050

Frequency(Hz) 0.1

14232939

0.214222938

0.314222938

0.413212837

Discharge flow rate (ℓ/min) Discharge pressure(MPa)

0495764

607080

Frequency(Hz) 0.1

485663

0.2475461

0.3465360

0.4455259

■Standard TypeETD2-2507*T-17 (standard) Weight AT:56kg/ ST:66kg

ETD2-2507*T-17-E(Increased safety type: class eG3)Weight AT:61kg/ ST:71kg

ETD2-2507*T-17-D(Flame-proof type: class d2G4)Weight AT:66kg/ ST:76kg

290500326

75

294(436)

59109 400

74114

250 (356)(606)

3.2

51

Rc1(Suction port)

Rc1(Discharge port)

Rc3/8Drain port

4-φ13(Mounting holes)

290500

326

75

294(436)

59109 400

74

114

250

(1.5)

(406)(656)

3.2

51

Rc1(Suction port)

Rc1(Discharge port)

Rc3/8Drain port

4-φ13(Mounting holes)

74

294

114250

109 40050059290

326

75

(436)

(27.5)

(476)(726)

3.2

51

Rc1(Discharge port)

Rc3/8Drain port

4-φ13(Mounting holes)

Rc1(Suction port)

■Separate TypeETD2-2507*T-17-S (standard) Weight AT:85kg/ ST:95kg

ETD2-2507*T-17-SE(Increased safety type: class eG3)Weight AT:90kg/ ST:100kg

ETD2-2507*T-17-SD(Flame-proof type: class d2G4)Weight AT:95kg/ ST:105kg

370420

664

54

294

169

448

67.5 62.5415550

(717)

Safety cover

4-φ15(Mounting holes)

Rc3/8Drain port

Rc1(Discharge port)

Rc1(Suction port)

370420

664

54

294

169

448

67.5 415 62.5

550(767)

Safety cover

4-φ15(Mounting holes)

Rc3/8Drain port

Rc1(Discharge port)

Rc1(Suction port)

370420

664

54

294

169

448

67.5 415 62.5

550(837)

Safety cover

4-φ15(Mounting holes)

Rc3/8Drain port

Rc1(Discharge port)

Rc1(Suction port)

Electric Operated Diaphragm PumpETD2-2507*T-17 Series

Electric Operated Diaphragm PumpETD2-2507*T-17 Series

Page 23: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

44EF

ETD2Electric D

iaphragm Pump ETD

245EF

Unit: mm Unit: mm

ETD2-2515*T-11 (standard) Weight AT:63kg/ ST:73kg■Standard Type

ETD2-2515*T-11 Performance TableDischarge flow rate (ℓ/min)

Discharge pressure(MPa)02438526478

2030405060

Frequency(Hz) 0.1

2337486276

0.22336486175

0.32334476074

0.42233475972

Discharge flow rate (ℓ/min) Discharge pressure(MPa)

097104122132

708090100

Frequency(Hz) 0.1

95103121130

0.290

102116129

0.389

100114126

0.48498

112120

ETD2-2515*T-11-E(Increased safety type: class eG3)Weight AT:71kg/ ST:81kg

ETD2-2515*T-11-D(Flame-proof type: class d2G4)Weight AT:77kg/ ST:87kg

290500

326

75

294(436)

59109 400

74114

250 (383)(633)

3.2

51

Rc1(Suction port)

Rc1(Discharge port)

Rc3/8Drain port

4-φ13(Mounting holes)

290500

326

75

294(436)

59109 400

74114

250 (460)(710)

(1.5)

3.2

51

Rc1(Suction port)

Rc1(Discharge port)

Rc3/8Drain port

4-φ13(Mounting holes)

74

294

114250 (535)

(785)

109 40050059

290326(34)

75

(436)

3.2

51

Rc1(Discharge port)

Rc1(Suction port)

Rc3/8Drain port

4-φ13(Mounting holes)

■Separate TypeETD2-2515*T-11-S (standard) Weight AT:93kg/ ST:103kg

ETD2-2515*T-11-SE(Increased safety type: class eG3)Weight AT:101kg/ ST:111kg

ETD2-2515*T-11-SD(Flame-proof type: class d2G4)Weight AT:107kg/ ST:117kg

Safety cover

4-φ15(Mounting holes)

Rc3/8Drain port

Rc1(Discharge port)

Rc1(Suction port)370420

664

54

294

169

448

67.5 415 67.5

550(744)

Safety cover

4-φ15(Mounting holes)

Rc3/8Drain port

Rc1(Discharge port)

Rc1(Suction port)

550

67.541567.5

448

169

294

54

64 6

420370

(821)

Safety cover

4-φ15(Mounting holes)

Rc3/8Drain port

Rc1(Discharge port)

Rc1(Suction port)

550

67.541567.5

448

169

294

54

64 6

420370

(896)

Electric Operated Diaphragm PumpETD2-2515*T-11 Series

Electric Operated Diaphragm PumpETD2-2515*T-11 Series

Page 24: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

ETD2ETD2 Electric Diaphragm Pump

46EF

Electric Diaphragm

Pump

Unit: mm

142

60(mounting size)

(mounting size)

72φ5

A

142

B

A

0.4kw

0.75kw

124

137

B

132

145

Dimensional Table

131

220

131 142

106(mounting size)117

φ5162155

142

114(mounting size)130

230

8.6

15

R5.5

6

R2.5

152

Outline Drawings of Inverter (standard/increased safety type class eG3)●0.4kw, 0.75kw Weight: 1kg

●0.4kw, 0.75kw, 1.5kw Weight: 3kg

EnlargedDrawing

●1.5kw Weight: 1.5kg

Outline Drawings of Inverter (flame-proof type class d2G4)

Standard/explosion-proof type (class eG3)

Model number

Input voltage class

Frequency settingrange

Applicable motor output

Capacity

Rated output current

Output voltage

Power supply/frequency

Protection structure

Cooling method

Explosion-proof type (class d2G4)

VFZ1-2004P

Deceleration ratio11: 30 to 70HzDeceleration ratio17: 20 to 70Hz

0.4Kw

1.1kVA

3.0A

VFNC1−2007P

3-phase, 200 V

20 to 80Hz

0.75Kw

1.6kVA

4.0A

3-phase, 200 to 240 V 50/60Hz

3-phase, 200 to 240 V 50/60Hz

Voltage ±10%, frequency ±5%

Enclosed type IP20

Self-cooling

VFNC1−2004P

Deceleration ratio11: 30 to 70HzDeceleration ratio17: 20 to 70Hz

0.4Kw

1.0kVA

2.4A

VFNC1−2015P

20 to 100Hz

1.5Kw

2.9kVA

7.5A

VFZ1−2007P

3-phase, 200 V

20 to 80Hz

0.75Kw

1.8kVA

4.8A

3-phase, 200 to 240 V 50/60Hz

3-phase, 200 to 240 V 50/60Hz

Voltage ±10%, frequency ± 5%

Enclosed type IP20

Forced-air cooling

VFZ1−2015P

20 to 100Hz

1.5Kw

3.0kVA

8.0A

Inverter Specifications

Allowable fluctuationof power supply

(mounting size)

(mounting size)

Electric Operated Diaphragm PumpInverter Specifi cations

Page 25: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

Accumulator for Diaphragm PumpTD48EF

TD Diaphragm Pump

Accumulator for Diaphragm Pump TD 49EF

Diaphragm

Pump TD

Unit: mm

Name

Cover A

Cover B

Fixture

Tube

Material

Aluminum alloy

Stainless steel

Aluminum alloy

Stainless steel

Stainless steel

Aluminum alloy

Stainless steel

Qty.

1

1

1

1

Name

Knob

Stopper bolt

Baffle plate

O-ring

Material

Resin

Stainless steel

Stainless steel

Fluorocarbon

Qty.

1

2

1

2

Discharge pulsation specific to diaphragm pump is absorbed, and more smooth discharge is realized.●The accumulators can be easily disassembled and reassembled without tools. (Man-hour for cleaning process is considerably reduced.)●They use a small number of parts and can be easily handled and maintained.●Transparent acrylic tubes through which the fluid in the accumulators can be visually seen can be manufactured as options. (Working pressure: 0.2 to 0.5 MPa)

Specifications ●How to order

Parts List

❻Mo

del❶

Accumu

lator❷

Accumu

lator capacity❸

Wette

d part

material❹

010 1 ℓ015 1.5 ℓ

Accumulator capacity

Wetted part material

A Aluminum alloyS Stainless steel

TD - AC 015 A

Model number

Applicable diaphragm

pump models

Air sealing pressure

Working pressure range

Proof test pressure

Body material

Port size

Ambient temperature

Installing direction

Accumulator capacity

Weight

 kg Aluminum alloy

Stainless steel

TD-AC010*

TD-08・TD-15

1 ℓ: 2.2

1 ℓ: 4.9

Atmospheric pressure

0.2 to 0.7 MPa

0.8 MPa

Aluminum alloy/stainless steel

2 positions on side: Rc3/8 One position on bottom: Rc1/2

0 to 60℃Vertical

1・1.5 ℓ

TD-AC015*

TD-20

1.5 ℓ: 2.8

1.5 ℓ: 6.3

Note) When a high discharge pressure is required for TD-15 (e.g. when the head is high), it is recommended to use the 1.5-ℓ type accumulator.

No. No.

TD-AC Accumulator capacity Wetted part material

Examples of Mounting

010: 1 ℓ015: 1.5 ℓ

A: Aluminum alloyS: Stainless steel

304.5(1 ℓ)404.5(1.5 ℓ)

107

15.5

□95

□74 4-M8 Threading depth 10

Rc1/2Inlet

18 18

20

Rc1/4(Port for mounting plug or pressure gauge)

2-Rc3/8(One of them is plugged.)

MAX7.5

Accumulator

Diaphragm pump

Accumulator

Fluid

Accumulator

Fluid

CAD/DATAis available.TD-AC/TTDAC   

Page 26: Diaphragm Pumps - taiyo-ltd.co.jp · Pneumatic Operated Diaphragm Pump TD 3 EF Principle of Operation Model Confi guration Application Examples Pneumatic operated type diaphragm

Accumulator for Diaphragm PumpTD50EF

TD Diaphragm Pump

Notes on handling

Procedures for replenishing with air

●Install the accumulator in the vertical direction.●The piping to connect the diaphragm pump and the accumulator shall be as short as possible. Use a pipe having as large a diameter as possible. (Reduce the pressure loss caused by piping as low as possible.)●After piping, check for leakage from the connected parts.●Be sure to plug the unused ports.●When the accumulator is used for a long time, replenish it with air at regular intervals depending on the operating conditions.(If the amount of air in the accumulator is small, the pulsation absorber may not function properly.)●If the discharge pressure is low (e.g. when the head is low), the force-fed fluid does not enter the accumulator, and the pulsation absorber may not function properly. In this case, install a throttle valve on the piping on the discharge side (after the accumula-tor), and adjust the valve.

1)Reduce the pressure in the piping to the atmospheric pressure.

2)Discharge the fluid from the piping and accumulator.

3)Loosen the gauge plug to reduce the pressure in the accumulator to the atmospheric pressure.

4)Re-set the gauge plug, start the diaphragm pump, and check for air leakage.