ELECTRICDISCHARGE

BYPASSVALVES

November 2006 / BULLETIN 100-60

PAGE 2 / Bulletin 100-60

Direct temperature control

Tight shutoff when closed

Can be interfaced with direct digitalcontrols or other building managementsystems

Functions as a standalone temperaturecontrol when used with a Sporlan TCB

Capacities up to 25 tons

Suitable for use with CFC, HCFC andHFC refrigerants

Proven reliable step motor design

High force output for unparalleled reliability

Corrosion resistant materials usedthroughout

Low power consumption- 4 watts

1100 FFEEAATTUURREESS AANNDD BBEENNEEFFIITTSS

TABLE OF CONTENTS

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3System Considerations . . . . . . . . . . . . . . . . . . . 3

Bypass to Evaporator Inlet with Distributor . 3

1650R Series Distributor or ASC . . . . . . . . . . 4

Valve / Equipment Location and Piping . . . . 4Bypass to Evaporator Inlet withoutDistributor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Bypass to Suction Line . . . . . . . . . . . . . . . . . . 4Desuperheating ThermostaticExpansion Valve . . . . . . . . . . . . . . . . . . . . . . . . 5

Valve / Equipment Location and Piping . . . . 5

Equalizing the EDBV . . . . . . . . . . . . . . . . . . . . 5General Application Factors . . . . . . . . . . . . . . . 5

Paralleling Valves . . . . . . . . . . . . . . . . . . . . . . . 5Piping Suggestions . . . . . . . . . . . . . . . . . . . . . 6Hot Gas Solenoid Valve . . . . . . . . . . . . . . . . . . 6

Need for Head Pressure Control . . . . . . . . . . . . 6Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Discharge Bypass Valves . . . . . . . . . . . . . . . . . . 6Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Electric Discharge Bypass Valve OrderingInstructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SDR-3, 3x

SDR-4

Bulletin 100-60, November 2006 supersedes Bulletin 100-60, January 2004 and all prior publications.

© COPYRIGHT 2006 BY PARKER HANNIFIN CORPORATION

OPERATION

The SDR series Electric Discharge Bypass Valves(EDBV) modulate by the electronically controlledrotation of a step motor driving a gear train to posi-tion a pin or piston in a port, refer to Figure 4. Themotor is a two phase bipolar, 12 volt DC, permanentmagnet rotor style with a step angle of 3.6¡. Whensupplied with the proper signal stream, the motorwill rotate, driving a gear train to increase mechani-cal advantage. The output of the gear train rotates athreaded lead screw by a precise and repeatableamount. The plunger converts the rotational motionto a linear force. The pin or piston is directly con-nected to the plunger providing high force to bothopen and close the valve. A pressure balanced pistonin the SDR-4 valve reduces flow induced motor loadand synthetic seating materials insure tight shutoffwhen the valves are closed. All materials are ratedfor discharge gas temperature and pressures. Thevalves are corrosion resistant and have copper con-nections for ease in installation.

CONTROLLERS

The SDR series valves all require electronic con-trollers to operate. The controller must be capable of:

1. Sensing a pressure or temperature2. Calculating valve step position3. Driving the step motor to properly achieve the

desired valve position.

Many off-the-shelf controllers are available for thesensing function, but few also incorporate the algo-rithms and drive circuitry necessary to modulate thevalve. Sporlan makes available two devices that canaccomplish any or all of the required functions- theTCB Temperature Control Board, and IB InterfaceBoards. The TCB, when supplied with the optional onboard temperature setpoint potentiometer, consti-tutes a standalone single point temperature controlfor the SDR series valves. The TCB may also be usedas an interface between the SDR valve and an exter-nal controller or Building Management System.When used as an interface, the TCB will accept a 4-20 milliamp, 0-10 volt DC, 5 volt DC logic level

command, or a 120 volt AC Pulse Width Modulatedsignal. The IB series interface boards are newer ver-sions that provide an economical alternative to theTCB when only the 0-10 volt and 4-20 milliampinputs are required. For a complete descriptionplease request Bulletin 100-50-1 for the TCB, andBulletin 100-50-2 for the IB.

Whether using the TCB as an interface or as a stand-alone control, best results are obtained by sensingthe discharge air or chilled water temperature,regardless of the physical location of the valve. In thefigures below, the TCB and sensor locations are illus-trated. Other arrangements are possible, contactSporlan Valve Company for further suggestions.

APPLICATION

Sporlan Discharge Bypass Valves provide a precisemethod of compressor capacity control in place ofcylinder unloaders or the handling of unloadingrequirements below the last step of cylinder unload-ing. Both mechanical and electronically controlledvalves are offered by Sporlan. Mechanical valves,which open on a decrease in suction pressure, arecovered in Bulletin 90-40.

Electronically controlled valves, referred to as EDBV,are generally used to directly control the temperatureof the cooled medium with the use of temperaturesensors and electronic controllers. They can be set toautomatically maintain a desired minimum evapo-rating temperature regardless of the decrease inevaporator load. As a result they are ideal for closetolerance temperature applications such as environ-mental chambers and process cooling.

When used in air conditioning applications it is usualto limit evaporator temperature to 26¡F or higher toprevent frost buildup. Depending on the design of theevaporator, discharge air should be limited toapproximately 36¡F.

SYSTEM CONSIDERATIONS

The discharge bypass valve is applied in a branchline off the discharge line as close to the compressoras possible. The bypassed vapor can enter the lowside at one of the following locations:

1. To evaporator inlet with distributor2. To evaporator inlet without distributor3. To suction line

Bypass to Evaporator Inlet with DistributorThis method of application, illustrated in Figure 1,provides distinct advantages over the other methods,especially for unitary or field built-up units wherethe high and low side are close coupled. It is also

Bulletin 100-60 / PAGE 3

External Equalizer

Compressor

Solenoid Valve

TEV

Catch-All

Condenser

Receiver

DistributorEvaporator

SDR 4

See•AllReturn Air

TCB

Figure 1

PAGE 4 / Bulletin 100-60

applicable on systems with remote condensing units,especially when the evaporator is located below thecondensing unit (See Figure 1).

The primary advantage of this method is that theEDBV can directly control the temperature of thecooled fluid. A sensor placed in the air off the evapo-rator or on the chilled water line of a chiller can causethe EDBV to modulate to maintain the desired set-point temperature. In addition, the system thermo-static expansion valve will respond to the increasedsuperheat of the vapor leaving the evaporator andwill provide the liquid required for desuperheating.The evaporator serves as an excellent mixing cham-ber for the bypassed hot gas and the liquid-vapormixture from the expansion valve. This ensures a dryvapor reaching the compressor suction. Oil returnfrom the evaporator is also improved since the veloc-ity in the evaporator is kept high by the hot gas.

Sporlan 1650R Series Distributor or ASCTo accomplish this application, two methods areavailable:

1. Bypass to Sporlan 1650R series distributorwith an auxiliary side connection

2. Bypass to Sporlan ASC series Auxiliary SideConnector

Method 1 is normally utilized on factory assembled orunitary units where hot gas bypass is initiallydesigned into the system. The 1650R series distribu-tor allows the hot gas to enter downstream of the dis-tributor nozzle. Method 2 is applicable on fieldbuilt-up systems or on existing systems where thestandard refrigerant distributor is already installedon the evaporator.

Some caution is necessary in either of these methods.If the distributor circuits are sized properly for nor-mal cooling duty, the flow of hot gas through the cir-cuits may cause excessive pressure drop and/or noise.Therefore, it is recommended that the distributor cir-cuits be selected one size larger than for straight cool-ing duty. For complete technical details on the 1650Rseries distributor and the ASC series Auxiliary SideConnector, refer to Bulletin 20-10 and supplementalbulletins.

Valve / Equipment Location and PipingWhen the evaporator is located below the compressoron a remote system, bypass to the evaporator inlet isstill the best method of hot gas bypass to insure goodoil return to the compressor. When this is done, thebypass valve must be located at the compressorrather than at the evaporator section. This willinsure obtaining rated capacity from the bypassvalve at the conditions for which it was selected. If

the evaporator is above or on the same level as thecompressor, this valve location will also eliminate thepossibility of hot gas condensing in the long bypassline and running back into the compressor during theoff cycle. Whenever hot gas bypass to the evaporatorinlet is necessary for a system with two or more evap-orator sections each with its own TEV (no liquid linesolenoid valves) but handling the same load, twomethods may be used to avoid operating interferencebetween sections:

1. Use a separate discharge bypass valve for eachevaporator section.

2. Use one discharge bypass valve to feed twobypass lines each with a check valve betweenthe bypass valve and the evaporator sectioninlet. The check valves will prevent interactionbetween the TEVÕs when the bypass valve isclosed.

Caution - introduction of hot gas between the expan-sion valve and a standard distributor should beavoided. The hot gas will create a higher than expect-ed pressure drop when flowing through distributornozzles or throats and tubes that have been sized forliquid refrigerant flow. Careful testing must be doneto assure system performance.

Bypass to Evaporator Inlet without DistributorMany refrigeration systems and water chillers do notuse refrigerant distributors but may require somemethod of compressor capacity control. This type ofapplication provides the same advantages as bypass-ing hot gas to the evaporator inlet with a distributor.All information relating to bypassing hot gas to theevaporator inlet with a distributor, except that con-cerning distributors or ASCÕs, also applies to bypass-ing to the evaporator inlet without a distributor.

Bypass to Suction lineOn many applications, it may be necessary to bypassdirectly into the suction line. Refer to figure 2 and 3.This is generally true of systems with multi-evapora-tors or remote condensing units, as well as onexisting systems where it is easier to connect to thesuction line than the evaporator inlet. When hot gas is bypassed directly into the suction line, the dangerof overheating the compressor and trapping the oil in

External Equalizer

Compressor

Solenoid Valve

TEV

Catch-All

Condenser

Receiver

DistributorEvaporator

SDR 4

See•AllReturn Air

TCB

Figure 2

Bulletin 100-60 / PAGE 5

the evaporator exists. As the suction temperaturesrise, the discharge temperature also starts toincrease. This can cause breakdown of the oil andrefrigerant with the possible result being a compres-sor burnout. This method offers added flexibility formulti-evaporator systems or remote systems becausethe hot gas bypass components can be located at thecondensing unit. However, to insure oil return spe-cial care must be taken in the system piping.

Desuperheating Thermostatic Expansion ValveOn those applications where the hot gas must bebypassed directly into the suction line downstream ofthe main expansion valveÕs bulb, an auxiliary ther-mostatic expansion valve, commonly called a desu-perheating TEV or a liquid injection valve, isrequired. The purpose of this valve is to supplyenough liquid refrigerant to cool the hot dischargegas to the recommended suction temperature. Mostcompressor manufacturers specify a maximum suc-tion gas temperature of 65¡F. For these require-ments, special desuperheating thermostatic chargesare available which will control at the proper super-heat to maintain the suction gas at or below 65¡F.For applications requiring suction gas temperaturesappreciably below 65¡F, contact Sporlan ValveCompany or the compressor manufacturer for assis-tance. In all cases the maximum permissible suctiongas temperature published by the compressor man-ufacturer must be followed. Request Bulletin 100-90-40 for more information.

Another, and possibly more energy efficient, methodof protecting the compressor from the effects of hotsuction gas is the use of the Sporlan Y1037 valve. TheY1037 Temperature Responsive Expansion Valve, orTREV, injects liquid into the suction of the compres-sor in response to changes in the discharge tempera-ture of the compressor. The Y1037 is not refrigerantspecific and a variety of discharge temperature set-points are available. The compressor manufacturershould be consulted for the highest permissible dis-charge temperature for selection of the TREV. Thissystem, may be more efficient than the desuperheat-ing TEV shown in Figure 3. The TREV injects liquidonly when required for purposes of limiting dischargetemperature, the desuperheating TEV injects liquid

to constantly maintain a specific superheat in thesuction vapor. In instances where the suction gasmay be cool enough to not need further liquid injec-tion, the TREV will not feed, saving energy. RequestBulletin 10-10-2 for more information.

Valve / Equipment Location and PipingAs indicated earlier, the bypass valve and hot gassolenoid valve (if used) must be located as near to thecompressor as possible to insure obtaining ratedcapacity from the EDBV at the conditions for whichit was selected. On some systems with remote con-densing units, the evaporator will be located belowthe compressor. When this is the case, serious con-sideration should be given to bypassing the hot gas tothe evaporator inlet to keep the compressor oil frombeing trapped in the evaporator or suction line.Consult with the compressor manufacturer for addi-tional application data.

One of the most important points to remember whenpiping the discharge bypass valve and the desuper-heating thermostatic expansion valve is that goodmixing must be obtained before reaching the bulblocation. Otherwise, the system operation maybecome unstable and the thermostatic expansionvalve will hunt. This mixing can be accomplished twoways: use a suction line accumulator downstream ofboth connections with the auxiliary thermostaticexpansion valve bulb downstream of the accumula-tor; tee the liquid-vapor mixture from the thermosta-tic expansion valve and the hot gas from the bypassvalve together before connecting a common line tothe suction line. The latter method is illustrated inFigure 3.

Equalizing the EDBVUnlike mechanical valves that require an equaliza-tion line to sense evaporator pressure, the EDBVneeds no equalizer connections.

GENERAL APPLICATION FACTORS

While the application discussion up to this point cov-ers the basic types of applications, several additionalfactors must be considered. These are discussedbelow as they apply to all methods illustrated inFigures 2, 3, and 4.

Paralleling ValvesIf the hot gas bypass requirement on any system isgreater than the capacity of the largest dischargebypass valve, these valves can be applied in parallel.The temperature settings of the paralleled valvesshould be the same to get the most sensitiveperformance. Since the TCB may only be used with asingle valve, when two valves are used in parallel forcapacity, the IB should be used because of its higherpower rating.

External Equalizer

Compressor

Solenoid Valve

TEV

Catch-All

CondenserReceiver

DistributorEvaporator

SDR 4

Desuperheating TEV

See•AllReturn Air

TCB

Figure 3

PAGE 6 / Bulletin 100-60

Piping SuggestionsFigures 2, 3, and 4 are piping schematics that illus-trate the general location of the discharge bypassvalves in the system. Sporlan recommends that rec-ognized piping references, such as equipment manu-facturersÕ literature and the ASHRAE Handbook, beconsulted for assistance with this subject. Sporlan isnot responsible for system design, any damage aris-ing from faulty system design, or from misapplicationof its products. If these valves are applied in anymanner other than as described in this bulletin, theSporlan warranty is void.

Actual system piping must be done to protect thecompressor at all times. This includes protectionagainst overheating, slugging with liquid refrigerant,and trapping of oil in various system locations.

The inlet connections on the discharge bypass valveshould be sized to match system piping require-ments. Inlet strainers are available, but not normal-ly supplied with solder type bypass valves. Just aswith any refrigerant flow control devices, the need foran inlet strainer is a function of system cleanliness.Moisture and particles too small for the strainer areharmful to the system and must also be removed.Therefore, it is recommended that a Catch-All Filter-Drier be applied in the liquid line and, if required,suction line. See Bulletin 40-10.

Hot Gas Solenoid ValveEDBVs are tight shutoff valves and systems employ-ing them do not ordinarily need an additional hot gassolenoid valve. All step motor valves, however, willremain at their current position if power is removedduring operation. In some critical systems an addi-tional hot gas solenoid may be desirable to ensurethat no hot gas is bypassed during system or powerfailures. When used, the hot gas solenoid valve maybe wired in series with a bi-metal thermostat fas-tened to the discharge line close to the compressor.This causes the solenoid valve to close if the dis-charge line temperature becomes excessive.

Complete selection information is given in theSporlan Solenoid Bulletin 30-10.

THE NEED FOR HEAD PRESSURE CONTROL

A discharge bypass valve can be applied on any sys-tem that experiences undesirable compressor cyclingduring periods of low load or for direct temperaturecontrol of any evaporator Normally, when hot gasbypass is used for capacity control during periods oflow load, outdoor ambient may be below 70¡F.Therefore, all air cooled systems that utilize hot gasbypass for capacity control should have some type ofhead pressure control to maintain satisfactory

performance. Sporlan Bulletin 90-30 Head PressureControl Valves has complete selection and applica-tion information.

SPECIFICATIONS

Sporlan Electric Discharge Bypass Valves utilizemany of the proven construction features of Sporlanstep motor electric expansion valves and evaporatorcontrol valves. They are constructed of the finestmaterials Ñ those best suited for the specific purposeintended for each valve component. This insures longlife and dependable service.

PROCEDURES

The selection of a discharge bypass valve and the nec-essary companion devices is simplified if completesystem information is available. This will result inthe most economical selection because the compo-nents will match the system requirements. Besidesthe discharge bypass valve, a specific applicationmay require a hot gas solenoid valve, an auxiliaryside connection distributor or ASC adapter, and adesuperheating TEV with a companion liquid linesolenoid valve. Once the type of application (reviewApplication Section pages 3-6) is determined, thenecessary valves can be selected from the informa-tion discussed in this section.

DISCHARGE BYPASS VALVES

The selection of a Sporlan Electric Discharge BypassValve involves five basic items:

1. Refrigerant - valve capacities may vary consid-erably for the different refrigerants.

2. Desired outlet fluid temperature - dependingon the system, this value must be set to preventcoil icing and/or compressor short cycling. Forexample, this may be 32-34¡F for a waterchiller; 26-28¡F for a normal air conditioningsystem; and, the freezing temperature of thespecific product for a refrigeration system.

3. Compressor capacity (tons) at minimumallowable evaporating temperature - consultcompressor capacity ratings for this value.

4. Minimum evaporator load (tons) at which thesystem is to be operated - most systems are notrequired to operate down to zero load but thisvalue will depend on the type of system. Forexample, most air conditioning systems onlyoperate down to 15-25% of full load. However, airconditioning systems for data processing andÒwhiteÓ rooms, and most refrigeration systemsmay be required to bypass to zero load conditions.

Bulletin 100-60 / PAGE 7

5. Condensing temperature when minimumload exists - since the capacity ratings of thebypass valves are a function of condensing tem-perature, it is vital that proper head pressureis maintained, especially during low load oper-ation. As the capacity table indicates, a con-densing temperature of 80¡F is considered theminimum allowable for satisfactory systemsoperation. See Bulletin 90-30 for informationon SporlanÕs Head Pressure Control Valves.

The discharge bypass valve must be selected to han-dle the difference between items 3 and 4 above. If theminimum evaporator load (item 4) is zero, the hot gasbypass requirement is simply the compressor capaci-ty at the minimum allowable evaporating tempera-ture (item 3). The following discussion on CapacityRatings and the example show how these factorsaffect a selection on a typical air conditioning system.Capacity Ratings - As the Discharge Bypass ValveCapacity Table indicates, valve ratings are depend-ent on the evaporating and condensing temperatureat the reduced load condition and the refrigerantused. Therefore, once this information and the hotgas bypass requirement in tons is determined, a dis-charge bypass valve can be selected.

Example - Select a discharge bypass valve for a 30ton, Refrigerant 22, air conditioning system with 67%cylinder unloading (4 of 6 cylinders unloaded).Normal operating conditions are 45¡F evaporatingtemperature and 120¡F condensing temperaturewith a minimum condensing temperature of 80¡F dueto head pressure control. When the evaporator loaddrops below the last step of cylinder unloading, it isnecessary to keep the system on the line to maintainproper space temperatures and avoid frosting of thecoil. From the compressor manufacturerÕs capacitytable, the compressor capacity in tons at the mini-mum allowable evaporating temperature is approxi-mately 10 tons. If the system had to be on the linedown to zero load, the bypass valve would have tobypass 10 tons of hot gas. With the necessary systemfactors Ñ R-22, 26¡F evaporating temperature at thereduced load condition, and 80¡F condensing temper-ature Ñ the capacity table is checked for a valvewhich can handle the 10 ton requirement. The SDR-4 has sufficient capacity for this condition. Both 7/8ÓODF and 1-1/8Ó ODF connections are available on theSDR-4 for piping convenience, and the proper sizeshould specified when ordering. See ordering infor-mation below.

Motor Type: 2 phase permanent magnet, 2 coil bipolarSupply Voltage: 12 VDC, -5% + 10%, measured at the

valve leads Connections: 4 lead, 18 AWG, PVC insulation jacketed

cablePhase Resistance: 75 ohms per winding ± 10%Current Range: .131 to .215 amps/winding; .262 to .439

amps with 2 windings energizedMaximum Power: 4 wattsInductance Per Winding: 62 ± 20% mHRequired Step Rate: 200 steps per second, other rates

must be tested and approvedNumber of Steps: SDR-3 & 3x - 3193 SDR-4 - 6386Resolution: .0000783 inches/step (.02 mm/step)Total Stroke: SDR - 3 & 3x .250 inches (64mm)

SDR-4 - .500 inches (12.7 mm)

Maximum Allowable Internal Leakage: less than 50cc/min at 100 psi

Maximum Allowable External Leakage: less than .10oz./year at 300 psig (.2 gr/yr at 20 bar)

Maximum Rated Pressure (MRP): 620Operating Temperature Range: -40°F to 155°F (-40°C

to 70°C)Maximum Dehydration Temperature: 250°F (120°C)Compatibility: all common CFC, HCFC and HFC refrig-

erants except ammonia; all common Mineral, Polyolesterand Alkylbenzene oils

Materials of Construction: copper - fittings; brass -valve body, motor housing, and adaptors; synthetic mate-rials - seating and seals

SPECIFICATIONS

PETSROTOM

DETAREPO

EGRAHCSIDROTALUGER

LANIMONEZIS

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FDOSNOITCENNOC

8/5,2/1,8/3-x3,3-RDS8/1-1,8/7-4-RDS

NIHTGNELELBACTEEF

04,03,02,01elbaliavA

DEPPIRTSDNA

DENNITELBAC

SDNE

ELECTRIC DISCHARGE BYPASS VALVE ORDERING INSTRUCTIONS

PRINTED IN THE U.S. OF A 20-1106

PAGE 8 / Bulletin 100-60

DAOLDECUDERTAERUTAREPMETROTAROPAVEELBAWOLLAMUMINIM °C

TNAREGIRFER LEDOM5 3 7- 81- 92- 04-

erutarepmeTgnisnednoC °C62 83 94 62 83 94 62 83 94 62 83 94 62 83 94 62 83 94

223-RDS 9.81 2.42 5.03 9.81 5.32 1.92 6.81 5.32 4.82 2.71 7.12 6.62 1.61 3.02 9.42 1.51 3.91 8.32

x3-RDS 3.43 1.44 7.55 7.43 5.44 0.65 7.43 5.44 0.65 0.53 8.44 7.65 4.53 5.54 4.75 7.53 2.64 1.854-RDS 7.26 2.88 221 9.76 4.29 521 3.96 0.89 721 2.37 4.89 031 6.57 001 131 0.77 401 231

a4313-RDS 3.31 5.61 3.91 6.21 4.51 2.81 3.21 7.41 9.71 9.01 3.31 5.61 8.9 3.21 4.51 1.90 6.11 7.41

x3-RDS 1.42 0.03 2.53 1.32 2.92 1.53 9.22 9.72 3.53 1.22 5.72 1.53 5.12 5.72 6.53 6.12 7.72 9.534-RDS 6.64 4.46 3.38 7.94 9.66 4.58 8.05 6.76 1.68 2.35 7.96 5.78 6.45 7.07 6.88 3.55 4.17 3.98

705/4043-RDS 0.12 6.52 1.03 1.22 9.52 8.92 4.12 2.52 4.92 6.91 5.32 7.72 5.71 0.12 3.62 8.61 3.02 2.52

x3-RDS 1.83 7.64 0.55 4.04 1.94 3.75 9.93 8.74 1.85 0.04 4.84 9.85 4.83 1.74 6.06 9.93 7.84 5.164-RDS 7.96 7.19 111 9.08 401 621 0.38 501 721 5.78 901 031 1.58 401 321 1.39 511 631

C7043-RDS 9.81 1.32 7.82 2.81 1.32 3.72 9.71 7.12 0.72 5.61 3.02 2.52 1.51 9.81 8.32 0.41 9.71 8.22

x3-RDS 3.43 2.24 5.25 4.33 8.34 6.25 3.33 1.14 2.35 6.33 9.14 7.35 0.33 4.24 0.55 2.33 8.24 5.554-RDS 1.46 5.78 911 3.96 3.79 321 1.17 3.69 521 6.57 3.79 821 4.87 001 231 5.08 301 531

410A3-RDS 31.9

57.0104.0

39.671.1

139.8

47.785.6

174.0

31.957.3

112.9

39.671.1

146.5

47.785.6

179.4

31.957.3

115.7

39.671.1

148.7

47.685.685.6

31.957.3

122.4

39.671.1

154.1

47.785.6

185.9

31.957.3

126.3

39.671.1

157.5

47.785.6

188.9

———

———

———

x3-RDS4-RDS

Capacities are based on discharge temperature 28°C above isentropic compression, 55°C condensing temperature, 0°C subcooling, 13°C superheat at the compressor and includesboth the hot gas bypassed and the liquid refrigerant for desuperheating, regardless of whether the liquid is fed through the system thermostatic expansion valve or auxiliary desu-perheating expansion valve.

DAOLDECUDERTAERUTAREPMETROTAROPAVEELBAWOLLAMUMINIM °F

TNAREGIRFER LEDOM04 62 02 0 02- 04-

erutarepmeTgnisnednoC °F08 001 021 08 001 021 08 001 021 08 001 021 08 001 021 08 001 021

223-RDS 4.5 9.6 7.8 4.5 7.6 3.8 3.5 7.6 1.8 9.4 2.6 6.7 6.4 8.5 1.7 3.4 5.5 8.6

x3-RDS 8.9 6.21 9.51 9.9 7.21 0.61 9.9 7.21 0.61 0.01 8.21 2.61 1.01 0.31 4.61 2.01 2.31 6.614-RDS 9.71 2.52 8.43 4.91 4.62 8.53 8.91 0.82 2.63 9.02 1.82 0.73 6.12 7.82 5.73 0.22 8.92 8.73

a4313-RDS 8.3 7.4 5.5 6.3 4.4 2.5 5.3 2.4 1.5 1.3 8.3 7.4 8.2 5.3 4.4 6.2 3.3 2.4

x3-RDS 5.6 6.8 1.11 5.6 6.8 1.11 6.6 7.8 1.11 6.6 7.8 2.11 6.6 8.8 3.11 7.6 9.8 4.114-RDS 3.31 4.81 8.32 2.41 1.91 4.42 5.41 3.91 6.42 2.51 9.91 0.52 6.51 2.02 3.52 8.51 4.02 5.52

705/4043-RDS 0.6 3.7 6.8 3.6 4.7 5.8 1.6 2.7 4.8 6.5 7.6 9.7 0.5 0.6 5.7 8.4 8.5 2.7

x3-RDS 7.01 5.31 6.61 8.01 6.31 6.61 8.01 6.31 6.61 8.01 6.31 7.61 9.01 7.31 8.61 0.11 8.31 0.714-RDS 9.91 2.62 8.13 1.32 7.92 9.53 7.32 1.03 2.63 0.52 2.13 0.73 3.42 8.92 0.53 6.62 8.23 8.83

C7043-RDS 4.5 6.6 2.8 2.5 6.6 8.7 1.5 2.6 7.7 7.4 8.5 2.7 3.4 4.5 8.6 0.4 1.5 5.6

x3-RDS 8.9 9.21 4.61 9.9 9.21 5.61 9.9 0.31 5.61 1.01 1.31 7.91 1.01 2.31 9.61 2.01 4.31 2.714-RDS 3.81 0.52 1.43 8.91 8.72 0.53 3.02 5.72 6.53 6.12 8.72 7.63 4.22 6.82 7.73 0.32 3.92 6.83

410A3-RDS 9.1

16.329.7

11.320.339.9

13.624.549.7

9.116.432.3

11.320.341.8

13.624.551.2

9.116.433.1

11.320.342.5

13.624.551.8

9.116.435.0

11.320.344.0

13.624.553.1

9.116.436.1

11.320.345.0

12.054.013.6

———

———

———

x3-RDS4-RDS

Capacities are based on discharge temperature 50°F above isentropic compression, 100°F condensing temperature, 0°F subcooling, 25°F superheat at the compressor and includesboth the hot gas bypassed and the liquid refrigerant for desuperheating, regardless of whether the liquid is fed through the system thermostatic expansion valve or auxiliary desu-perheating expansion valve.

DIMENSIONS

8.21

8.08

SDR-3, 3x

Fitting Size Available - 3/8, 1/2 or 5/8 ODF

8.21

8.08

SDR-4

Fitting Size Available - 3/8, or 1-1/8 ODF

balanced pistondesign

high temperaturesynthetic seat

brass motorhousing

brass adaptor

copper fittings

SDR-4 Figure 4