Hydraulic Control Valves Engineering Data - Bermad · BERMAD 700 SERIES HYDRAULIC CONTROL VALVES Overview The 700 Series is the BERMAD flagship product line, especially for Waterworks

BERMAD Inc., 4070 Leaverton Court, Anaheim, CA 92807Tel: 800-821-6825, 714-666-1100 Fax: 714-666-2533 • PT7XE02 04

b e r m a d @ b e r m a d u s a . c o m • w w w . b e r m a d . c o m

BERMADBERMAD Engineering 700 Series

Hydraulic Control Valves

Engineering Data

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Contents

700 Series - Engineering Data■ Introduction Page 2

■ Product Features Pages 3-4

■ Valve - Exploded view Page 5

■ Principles of Operation Page 6

■ Technical Specifications Page 7

■ Pressure Rating Page 8

■ Dimensions and Weights, SI (Metric units) Page 9

■ Dimensions and Weights, US (English units) Page 10

■ Flow Chart “Y” and Angle pattern, Flat Disc - SI Page 11

■ Flow Chart “Y” and Angle pattern, Throttling Plug (U-Type) - SI Page 12

■ Flow Chart “Y” and Angle pattern, Flat Disc - US Page 13

■ Flow Chart “Y” and Angle pattern, Throttling Plug (U-Type) - US Page 14

■ Cavitation Page 15

■ Practical Hydraulic Data Page 16

■ Valve Plugs Characteristics Page 17

■ Typical Pressure Reducing Performance Chart Page 17

BERMAD Waterworks700 Series

Engineering Data

BERMAD 700 SERIES HYDRAULIC CONTROL VALVES

OverviewThe 700 Series is the BERMAD flagship product line, especially for Waterworks applications.

This Engineering Guide will assist in the selection of the most appropriate BERMAD valves by presenting and organizing thenecessary technical data into easy-to-read formats.

Basic Design FeaturesThe basic body design (globe or angle) results in lower pressure loss, reduced weight, and higher resistance to cavitationdamage compared to that of a conventional globe control valve.

Valves are available in sizes 11/2 to 32 inch (40-800 mm), threaded or flanged, with pressure ratings up to ISO PN 25; ANSIClass 300 psi. The valves are hydraulically operated by means of diaphragm actuators, (except for high-pressure applicationpiston actuators). Principally, the valves are constructed of ductile iron, cast iron or steel (other alloys are available) and areavailable with various protective coatings.

The double-chambered actuator provides a versatility not found in conventional control valves and achieves smooth drip-tightclosing, accurate regulation and positive on/off control. The associated control trim provides all the necessary coordinated andcomplementary accessories for optimum valve operation. This actuator resists wear and tear from movement, prevents leakagedue to dirt, is not sensitive to sediments, and has no need for lubrication. The life expectancy of its Nylon-reinforced diaphragmis virtually endless.

The standard flat sealing disk assembly includes a seal of NBR (Buna-N). Many special sealing materials are also available.The flat disc can be replaced by a throttling plug for applications with low flows and high pressure drops.

Optionally, the valve can be fitted with several accessories such as a valve position indicator, a mechanical closure and flowadjuster (for manual operation), limit switch assemblies (for position remote monitoring), and a lift spring assembly.

StandardsBERMAD is certified according to the ISO 9001 Quality Assurance Standard and each valve is certified as complying with NSF,WRAS, and other recognized international standards.

2

SIISO 9001

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A s s u r e

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LISTED APPROVED

Factory Mutual ResearchCorporation


Engineering Data

Introduction

3

[ 1 ] - Double Chambered ActuatorThe entire actuator assembly (seal disk to top cover) can be easily removed from the valve body as one completeunit, providing ease of inspection and maintenance.

[ 2 ] - Cover PlugEnables on-site retrofit of:Indicator: For visual valve opening indicationLimit-switch: For signaling valve position to control systemValve Position Transmitter: For analog transmission of valve position to control system

[ 3 ] - Diaphragm AssemblyThe unshaped, nylon reinforced, diaphragm is supported by the cover and separation partition on its circumference while the diaphragm washers provide full support over the majority of the surface. It is centrallyguided. Diaphragm load is limited to only stretching forces applied to the active area.

[ 4 ] - Inherent Separation PartitionThe built-in separation partition includes the bearing which provides complete central guiding for the valve moving assembly. In the double chambered configuration, it isolates the lower control chamber from the flow.In the single chambered configuration, it separates the lower control chamber from the flow so that the diaphragm is protected and free from flow stresses.

[ 5 ] - SpringOptional for single-chambered configurations or when the check feature is required.Superfluous for double-chambered configurations.

[ 6 ] - Seal Disc AssemblySelf-aligning, seal disc assembly provides balanced, free movement and a resilient seal for perfect, drip-tight sealing. It enables using several variations of seals and plugs for a wide range of applications and working conditions.

[ 7 ] - SeatStainless steel, raised, replaceable in-line and on-site.

[ 8 ] - Wide Body (“Y” or Angle pattern)Hydrodynamically designed for efficient flow with minimal pressure loss and excellent resistance to cavitation.Full bore, valve port area clear of obstructions, no ribs or stem guides.Increases capacity by 25% over ordinary globe valves. Also Angle pattern valve is available.

[ 9 ] - End ConnectionsConforms to pressure ratings and standards of: ISO, ANSI, JIS, BS, and others.

Valve Plug Options

Flat disc: “Quick opening plug”: Standard plug provides high flow and quick response.

Throttling plugs: A throttling plug is used in order to provide more accurate, stable and smooth response for pressure and flow regulation while reducing noise and vibration.Two types are available:“U” contour (standard) and “V” contour.

U-PortThrottling Plug

BERMAD Waterworks Product Features 700 Series

Engineering Data

[ 1 ]

[ 3 ]

[ 4 ]

[ 5 ]

[ 6 ]

[ 7 ]

[ 2 ]

[ 8 ]

[ 9 ]4


Engineering Data

Lifting eye nut

Cover bolt & disc

Indicator nutShaft nut

Diaphragm washer

Diaphragm

Spacer discShaft

Cover nut & disc

Spring

O-ring

Closure disc

Closure disc nut

Shaft locking screwClosure seal

Seal disc washer

Seat screw

Valve seatValve body

Control boss

Drain

Cover plug

O-ring

Cover

Bearing screw

Throttling Plug (U-Type) – Option

Control boss

Bearing discO-ring

Bearing

O-rings

Diaphragm washer

Separating partition

Eye cover bolt

Stud

Seal disc bolts

Nut & disc

5

Valve - Exploded View


Engineering Data

6

On-Off Modes


Engineering Data

Principles of Operation

Modulating Mode

Pressure Reducing Models

Closed PositionThe closed adjustable pilot valve trapsline pressure in the upper controlchamber and the resulting force movesthe valve to the fully closed position.

Modulating PositionThe pilot valve senses and reacts to linepressure changes and opens or closesaccordingly.The pilot valve controls the pressure inthe upper control chamber of the valvecausing the valve to modulate to anintermediate position between fully openand closed.

Modulating Open PositionThe open pilot valve releases linepressure from the upper control chamberand the line pressure acting on the sealdisc moves the valve to the openposition.

Powered Open PositionPressure in the upper control chamberis discharged and line pressure is appliedto both the lower control chamber andthe seal disc. This creates a force thatpowers the valve to the open position.

Closed PositionLine pressure applied to the uppercontrol chamber of the valve creates asuperior force that moves the valve tothe closed position and provides driptight sealing.

Open PositionDischarging the pressure in the uppercontrol chamber to atmosphere or someother lower pressure zone causes theline pressure acting on the seal disc tomove the valve to the open position.

7

Connection Standard■ Flanged: ISO 700S-1 (Ductile iron),■ Threaded: NPT or BSP 40, 50, 65 & 80 mm

Water Temperature■ Up to 80ºC

Available Sizes ("Y" & Angle)■ 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400,

450, 500, 600, 700, 750 and 800 mm

Working pressure■ ISO PN 16: 16 bar■ ISO PN 25: 25 bar

Standard Materials❑ Main valve body and cover

Ductile iron EN 1563❑ Main valve internals

Stainless steel, bronze and coated steel❑ Control Trim

Brass Components/AccessoriesForged brass fittings & copper tubing

❑ ElastomersNBR (Buna-N)EPDMViton

❑ CoatingFusion Bonded Epoxy, RAL 5005 (Blue)NSF 61 and WRAS approvedor Electrostatic Polyester Powder, RAL 6017 (Green)

Optional Materials❑ Main valve body/internals

Cast Carbon steel ASTM A-216-WCBCast Stainless steel 316 CF8M (316)AluminumNi.Al. bronzeTitaniumAlloy 20DuplexHastalloyMarine BronzeSMO

❑ Control TrimStainless steel 316Hastalloy C-276

Connection Standard■ Flanged: ANSI B16.42 (Ductile iron),■ Threaded: NPT or BSP 11/2, 2, 21/2 & 3 inch

Water Temperature■ Up to 180ºF

Available Sizes ("Y" & Angle)■ 11/2, 2, 21/2, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24, 28,

30 and 32 inch

Working pressure■ Class #150: 250 psi■ Class #300: 400 psi

Manufacturers Standard Materials■ Main valve body and cover

Ductile iron ASTM A-536■ Main valve internals

Stainless steel, bronze and coated steel■ Control Trim

Brass Components/AccessoriesForged brass fittings & copper tubing

■ ElastomersNBR (Buna-N)EPDMViton

■ CoatingFusion Bonded Epoxy, RAL 5005 (Blue)NSF 61 and WRAS approvedor Electrostatic Polyester Powder, RAL 6017 (Green)

Optional Materials❑ Main valve body/internals

Cast Carbon steel ASTM A-216-WCBCast Stainless steel CF8M (316)AluminumNi.Al. bronzeTitaniumAlloy 20DuplexHastalloyMarine BronzeSMO

❑ Control TrimStainless steel 316Hastalloy C-276

USSI Metric English


Engineering Data

Technical Specifications

8

Standard Operation Pressure – Materials Data

End Connections Standards / Pressure Ratings / Materials / Max. Operating Pressure

Control Chamber Displacement Volume

mm 40 50 60 80 100 150 200 250 300 350 400 450 500 600-800

inch 11/2” 2” 21/2” 3” 4” 6” 8” 10” 12” 14” 16” 18” 20” 24”-32”

Liter 0.125 0.125 0.125 0.3 0.45 2.15 4.5 8.5 12.4 12.4 29.8 29.8 29.9 98

Gallon 0.03 0.03 0.03 0.03 0.12 0.57 1.19 2.25 3.28 3.28 7.88 7.88 7.88 25.9Volume

Sizes

+ Available, Not required by the standard pressure class– Not available

BermadCode

101625A1A2A5A3BDBSJ1J6J2B1B6B2

BPPHNPNH

EndConnections

StandardI S OI S OI S O

A N S IA N S IA N S IA N S IBS 10BS 10J I SJ I SJ I S

A B N TA B N TA B N TThreadsB S PB S PN P TN P T

PressureClass

PN 10PN 16PN 25# 125# 250# 150# 300

Table DTable H

10 K16 K25 K101625

Cast IronASTM

A-126 B10 bar16 bar

–175 psi300 psi

––

100 psi300 psi14 bar22 bar

–10 bar16 bar

–

16 bar

230 psi

BronzeASTMB 62

+16 bar25 bar

++

225 psi400 psi

+400 psi

+27 bar28 bar

+16 bar25 bar

25 bar

400 psi

Ductile IronASTMA-536

++

25 bar++

250 psi400 psi

+400 psi

+27 bar28 bar

++

25 bar

25 bar

400 psi

Carbon SteelASTM

A-216 WCB++

25 bar++

285 psi400 psi

+400 psi

+27 bar28 bar

++

25 bar

25 bar

400 psi

Stainless SteelASTM A-531

CF 8M++

25 bar++

285 psi400 psi

+400 psi

+27 bar28 bar

++

25 bar

25 bar

400 psi


Engineering Data

Pressure Rating

9

Engineering Data

BERMAD Waterworks Engineering Data

Dimensions & Weights

Angle Pattern

W

H

h

LR

4012415578852279.5124165788522711

50124155838522710124165858522711.5

6514917895109251201491859510925113.5

8015220010010228121.515920710510928723

1001902221151273423520025012713535041

1502253201431524417123432015916545481

200265390172203545118277390191216558138

250320480204219633205336480223236649233

300396550248273777350415550261294796390

350400550264279781370419550293299801245

40045074029936910828004677403253861099855

45045074032037010828204677403583861099870

ISO

PN 10

; 16

ISO

PN 20

; 25

mmLWRhH

Weight (Kg)LWRhH

Weight (Kg)

W

L

H

h

G Pattern 60014501250470

1965325015001250470

19653500

70016501250490

1985370016501250490

19853700

75017501250520

2015390017501250520

20153900

80018501250553

2048410018501250553

20484100

ISO

PN 10

; 16

ISO

PN 20

; 25

mmLWhH

Weight (Kg)LWhH

Weight (Kg)

Y Pattern

H

h

L

W

Flanged

4020515578

2399.1

20515578

23910

5021016583

24410.621016583

24412.2

6522217895

25713

22218595

25715

8025020010030522

26420710531425

10032022311536637

33525012737843

15041532014349275

43332015950885

200500390172584125524390191602146

250605480204724217637480223742245

300725550242840370762550261859410

350733550268866381767570295893434

400990740300

1108846

1024740325

1133900

4501000740319

1127945

1030740357

1165967

5001100740358

1167962

1136750389

1197986

ISO

PN 10

; 16

ISO

PN 20

; 25

mmLWhH

Weight (Kg)LWhH

Weight (Kg)

Angle Pattern

H

LR

h

W

Y Pattern

L

W

H

Threaded

40155122

402015.5

50155122

402025.5

65212122

48209

8

80250163

5626417

BSP

; NPT

mmLW

hH

Weight (Kg)

501211224083

2255.5

6514012248

102242

7

8015916355

11529415

BSP

; NPT

mmLWRhH

Weight (Kg)

h

700 Series

SI Metric

10

Flanged

Y Pattern 11/2”8.16.13.19.4208.16.13.19.422

2”8.16.13.39.6238.36.53.39.627

21/2”8.37.03.710.1298.77.33.710.133

3”9.87.93.912.049

10.48.14.112.455

4”12.68.84.514.482

13.29.85.014.995

6”16.312.65.619.416517.012.66.320.0187

8”19.715.46.823.027620.615.47.523.7322

10”23.818.98.028.547825.118.98.829.2540

12”28.521.79.533.181630.021.710.333.8904

14”28.921.710.634.184030.222.411.635.2957

16”39.029.111.843.6186540.329.112.844.61984

18”39.429.112.644.42083227.129.114.145.92132

20”43.329.114.145.9212144.729.515.347.12174

ANSI

125 ;

150

ANSI

250 ;

300

inchLWhH

Weight (lb)LWhH

Weight (lb)

H

h

L

W

W

L

H

h

G Pattern 24”5749

18.577

71505949

18.577

7700

28”65491978

814065491978

8140

30”7049

20.579.385807049

20.579.38580

32”7349

21.880.690207349

21.880.69020

ANSI

125 ;

150

ANSI

250 ;

300

inchLWhH

Weight (lb)LWhH

Weight (lb)

BERMAD WaterworksDimensions & Weights 700 Series

Engineering Data

US English

Angle PatternY Pattern

Threaded

11/2”6.14.8

1.67.912

2”6.14.8

1.68.012

21/2”8.34.8

8.28.218

3”9.86.4

2.210.437

BSP

; NPT

inchLW

hH

Weight (lb)

2”4.84.81.63.38.912

21/2”5.54.81.94.09.515

3”6.36.42.24.511.633

BSP

; NPT

inchLWRhH

Weight (lb)

H

LR

h

W

L

W

H

h

Angle Pattern 11/2”4.96.13.13.38.9214.96.53.13.38.924

2”4.96.13.33.38.9224.96.53.33.38.925

21/2”5.97.03.74.39.9445.97.33.74.39.930

3”6.07.93.94.011.1476.38.14.14.311.351

4”7.58.74.55.013.5777.99.85.05.313.890

6”8.912.65.66.017.41579.212.66.36.517.9179

8”10.415.46.88.021.526010.915.47.58.522.0304

10”12.618.98.08.624.945213.218.98.89.325.6514

12”15.621.79.810.730.677216.321.710.311.631.3860

14”15.721.710.411.030.781616.521.711.511.831.5540

16”17.729.111.814.542.6176418.429.112.815.243.31885

18”17.729.112.614.542.6180818.429.114

15.243.31918

ANSI

125 ;

150

ANSI

250 ;

300

inchLWRhH

Weight (lb)LWRhH

Weight (lb)W

H

h

LR

SI Metric


Engineering Data

Flow Charts

11

Flow Rate - m3/h (Water)

Y Pattern, Flat Disc

Pre

ssur

e Lo

ss -

bar

0.1

1.0

10 100 1,000 10,000

0.5 500

40 65

50

80 100 150 200 250 300 350 450 600 700750800400

50 500 5,000

Angle Pattern, Flat Disc


Pre

ssur

e Lo

ss -

bar

50 500 5,0000.1

1.0

10 100 1,000 10,000

65

50

80 100 150 200 250 300 350 450

400

400.5

SI Metric

12


Engineering Data

Flow Charts

SI Metric

Angle Pattern, Throttling Plug (U-Type)


10 100 1,000 10,00050 500 5,0000.1

1.0

0.565

50

250 300 350 450

400

40 80 100 150 200

Pre

ssur

e Lo

ss -

bar

Y Pattern, Throttling Plug (U-Type)


Pre

ssur

e Lo

ss -

bar

0.1

1.0

10 100 1,000 10,000

0.5

50 500 5,000

500

40 65

50

80 100 150 200 250 300 350 450

400

13


Engineering Data

Flow Charts

Flow Rate - gpm (Water)

Pre

ssur

e Lo

ss -

psi

50 500 5,000 50,000

12”

3” 4” 6” 8” 18”11/2”

2”

21/2”

14”

16”10”10

1,000 10,000 100,000

15

5

10 100

Angle Pattern, Flat Disc

1

1

10

10 100 1,000 10,000 100,000

15

5

Y Pattern, Flat Disc


Pre

ssur

e Lo

ss -

psi

50 500 5,000 50,000

10”

24”

3” 4” 6” 8” 18”

12”

11/2”

2”

21/2”

14”

16”

20”

28”30”32”

US English


Engineering Data

Flow Charts

US English

14

Angle Pattern, Throttling Plug (U-Type)


Pre

ssur

e Lo

ss -

psi

1

15

5

10 100 1,000 10,000 100,00050 500 5,000 50,000

103” 4” 6” 8” 18”

12”

11/2”

2”

21/2”

14”

16”10”


Pre

ssur

e Lo

ss -

psi

10

Y Pattern, Throttling Plug (U-Type)

1

15

5

10 100 1,000 10,000 100,00050 500 5,000 50,000

3” 4” 6” 8” 18”

12”

11/2”

2”

21/2”

14”

16”

20”

10”

BERMAD WaterworksCavitation 700 Series

Engineering Data

15

The cavitation phenomenon has a significant affect on controlvalve and system performance.Cavitation may damage the valve and piping by the affects oferosion and vibration. Cavitation also generates noise and maylimit and ultimately choke the flow.As the pressure differential across the valve increases, the staticpressure of the flow passing through the throttling area of thevalve (Vena Contracta) drops sharply.When the fluid's static pressure reaches liquid vapor pressure,vapor cavities (bubbles) form and grow until they violently implodeby the recovered pressure downstream to the valve seat.The implosion of these cavities generates high-pressure surges,micro jets and intensive heat, which erode valve componentsand downstream piping. In its final stage, cavitation flashesand chokes the flow.The above Cavitation Guides for Bermad 700 Series valves arebased on the formula commonly used in the valve industry:

= (P2-Pv) / (P1-P2)

Where:

= Sigma, cavitation index, dimensionlessP1 = Upstream pressure, absoluteP2 = Downstream pressure, absolutePv = Liquid vapor pressure, absolute

(Water, 18oC = 0.02 bar-a ; 65oF = 0.3 psi-a)

Use these guides and your applications upstream anddownstream pressures to determine whether their intersectionlies in or out of the cavitation damage zone.Considerations to avoid cavitation damage:A) Reduce system pressure in stages designing each pressure

stage to be above cavitation conditions.B) Consider using other valve selection criteria

a. Valve body and plug typeb. Valve sizec. Valve material

Notes:1. An alternate cavitation index formula introduced by

ISA is: ISA = (P1-Pv) / (P1-P2) which equals +1

2. The above charts should be considered only as a general guide.3. For optimum system and control valve application please consult Bermad.

Cavitation

Cavitation Guide Cavitation Guide EnglishUS

Upstream pressure - psi

Do

wn

str

eam

pre

ssu

re -

psi

120

100

80

60

40

30

20

10

00 30 60 90 120 150 180 210 240 270 300 330 360

110

90

70

50

CavitationDamage Zone

U-PlugFlat D

isc

Upstream pressure - bar

Do

wns

trea

m p

ress

ure

- b

ar

8

7

6

5

4

3

2

1

00 2 4 6 8 10 12 14 16 18 20 22 24

CavitationDamage Zone

U-PlugFlat D

isc

SI Metric


Engineering Data

Practical Hydraulic Data

16

Where:Kv = Valve flow coefficient (flow in m3/h at 1bar Diff. Press.)Cv = Valve flow coefficient (flow in gpm at Diff. Press. 1psi)Q = Flow rate (m3/h ; gpm)∆P = Differential pressure (bar ; psi)Gf = Liquid specific gravity (Water = 1.0)

Valve flow coefficient, Kv or Cv Kv(Cv)=Q Gf

∆PEquivalent Pipe Length, Leq

Where:Leq= Equivalent nominal pipe length (m ; feet)Lk = Equivalent length coefficient for turbulent flow in clean

commercial steel pipe (SCH 40)D = Nominal pipe diameter (m ; feet)

Note:The Leq values given are for general consideration only.Actual Leq may vary somewhat with each of the valve sizes.

Where:K = Flow resistance or Head loss coefficient (dimensionless)∆H = Head loss (m ; feet)V = Nominal size flow velocity (m/sec ; feet/sec.)g = Acceleration of gravity (9.81 m/sec2 ; 32.18 feet/sec2)

K = ∆H2gV2

Flow resistance or Head loss coefficient,

Cv = 1.155 Kv

Leq = Lk·D

mm 40 50 65 80 100 150 200 250 300 350 400 450 500Kv 42 50 55 115 200 460 815 1,250 1,850 1,990 3,310 3,430 3,550K 2.3 3.9 9.2 4.9 3.9 3.7 3.8 3.9 3.7 5.9 3.7 5.5 7.8Leq - m 4.3 10.3 33.4 21.6 23.0 37.5 53.9 70.0 85.6 159.9 112.7 204.8 323.8Kv 36 43 47 98 170 391 693 1,063 1,573 1,692 2,814 2,916 3,018K 3.1 5.4 12.8 6.7 5.4 5.2 5.2 5.4 5.1 8.2 5.1 7.6 10.8Leq - m 6.0 14.3 46.2 29.9 31.9 51.9 74.6 96.8 118.4 221.3 155.9 283.5 448.1Kv 46 55 61 127 220 506 897 1,375 2,035 2,189 3,641 3,773 NAK 1.9 3.2 7.6 4.0 3.2 3.1 3.1 3.2 3.1 4.9 3.0 4.5 NALeq - m 3.6 8.5 27.6 17.8 19.0 31.0 44.6 57.8 70.7 132.1 93.1 169.3 NAKv 39 47 51 108 187 430 762 1,169 1,730 1,861 3,095 3,207 NAK 2.6 4.5 10.6 5.6 4.5 4.3 4.3 4.5 4.2 6.8 4.2 6.2 NALeq - m 5.0 11.8 38.2 24.7 26.4 42.9 61.7 80.0 97.9 182.9 128.9 234.3 NA

Y-PatternFlat Disc

Y-PatternU-Plug

Angle PatternFlat Disc

Angle PatternU-Plug

SI Metric

US English

inch 1.5" 2" 2.5" 3" 4" 6" 8" 10" 12" 14" 16" 18" 20"Cv 49 58 64 133 230 530 940 1,440 2,140 2,300 3,820 3,960 4,100K 2.3 3.9 9.2 4.9 3.9 3.7 3.8 3.9 3.7 5.9 3.7 5.5 7.8Leq-feet 14.2 33.8 109.5 70.8 75.6 123.0 176.9 229.5 280.8 524.5 369.6 671.9 1,062.3Cv 41 49 54 113 200 450 800 1,230 1,820 1,950 3,250 3,370 3,490K 3.1 5.4 12.8 6.7 5.4 5.2 5.2 5.4 5.1 8.2 5.1 7.6 10.8Leq-feet 19.7 46.8 151.6 97.9 104.6 170.2 244.8 317.6 388.6 725.9 511.6 930.0 1,470.3Cv 53 64 70 146 250 580 1,040 1,590 2,350 2,530 4,210 4,360 NAK 1.9 3.2 7.6 4.0 3.2 3.1 3.1 3.2 3.1 4.9 3.0 4.5 NALeq-feet 11.7 28.0 90.5 58.5 62.5 101.6 146.2 189.7 232.0 433.4 305.5 555.3 NACv 45 54 59 124 220 500 880 1,350 2,000 2,150 3,580 3,710 NAK 2.6 4.5 10.6 5.6 4.5 4.3 4.3 4.5 4.2 6.8 4.2 6.2 NALeq-feet 16.3 38.7 125.3 80.9 86.5 140.7 202.4 262.5 321.2 599.9 422.8 768.6 NA

Y-PatternFlat Disc

Y-PatternU-Plug

Angle PatternFlat Disc

Angle PatternU-Plug

mm 600 700 750 800Kv 7,350 7,500 7,500 7,500K 3.8 6.7 8.8 11.4Leq - m 188.0 390.1 550.9 760.7

G-PatternFlat Disc

inch 24" 28" 30" 32"Cv 8,490 8,670 8,670 8,670K 3.8 6.7 8.8 11.4Leq-feet 616.6 1,280.0 1,807.3 2,495.6

G-PatternFlat Disc

EnglishSI Metric US

Engineering Data


Engineering Data

17

Flo

w -

m3 /

h

Valve Plugs CharacteristicsKv ; Cv to Valve Opening Chart

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e Tr

avel

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U-Plug

Flat Disc

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Typical Pressure Reducing Performance ChartActual Hydraulic Laboratory Results

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bar Upstream Press.

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Hydraulic Control Valves

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Hydraulic Control Valves Engineering Data - Bermad · BERMAD 700 SERIES HYDRAULIC CONTROL VALVES Overview The 700 Series is the BERMAD flagship product line, especially for Waterworks