Hydraulic Control Valves Engineering Data - Bermad · BERMAD 700 SERIES HYDRAULIC CONTROL VALVES...
Transcript of Hydraulic Control Valves Engineering Data - Bermad · BERMAD 700 SERIES HYDRAULIC CONTROL VALVES...
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
Qu
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A s s u r e
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LISTED APPROVED
Factory Mutual ResearchCorporation
BERMAD Waterworks700 Series
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
BERMAD Waterworks700 Series
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
BERMAD Waterworks700 Series
Engineering Data
6
On-Off Modes
BERMAD Waterworks700 Series
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
BERMAD Waterworks700 Series
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
BERMAD Waterworks700 Series
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
BERMAD Waterworks700 Series
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
Flow Rate - m3/h (Water)
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
BERMAD Waterworks700 Series
Engineering Data
Flow Charts
SI Metric
Angle Pattern, Throttling Plug (U-Type)
Flow Rate - m3/h (Water)
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)
Flow Rate - m3/h (Water)
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
BERMAD Waterworks700 Series
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
Flow Rate - gpm (Water)
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
BERMAD Waterworks700 Series
Engineering Data
Flow Charts
US English
14
Angle Pattern, Throttling Plug (U-Type)
Flow Rate - gpm (Water)
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”
Flow Rate - gpm (Water)
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
BERMAD Waterworks700 Series
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
BERMAD Waterworks700 Series
Engineering Data
17
Flo
w -
m3 /
h
Valve Plugs CharacteristicsKv ; Cv to Valve Opening Chart
Kv ; Cv %
Valv
e Tr
avel
%
0
10
20
30
40
50
60
70
80
90
100
U-Plug
Flat Disc
0 10 20 30 40 50 60 70 80 90 100
Typical Pressure Reducing Performance ChartActual Hydraulic Laboratory Results
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
00 100 200 300 400 500 600 700 800 900 1,000 1,100 1,200
700
600
500
400
300
200
100
0
Time - sec
Pre
ssur
e -
bar Upstream Press.
Flow Rate
Downstream Press.
BERMAD Inc., 4070 Leaverton Court, Anaheim, CA 92807 Tel: 800-821-6825, 714-666-1100, Fax: 714-666-2533PT7XE02 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
stu
di[
o]z