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The valve has double seats.The fluid outflow through the valve core of the upper and lower sealing surface.The unbalanced pressure is small.It is a balanced structure,which are widely used in petroleum,chemical,pharmaceutical,metallurgical,power plants,such as the industrial sector,to control of gas liquid medium such as steam.
GAZJHN Pneumatic diaphragm double-seated pressure flow valve Structure
Valve Body.
Structure:flowing through type globe valve with double-seated.
DN:25~300mm.
PN:1.6~10.0Mpa or class 150~class 600.
Connections:flanged type.
Material:WCB,HT200 ZG230-450 ZG1Cr18Ni9Ti.ZG0Cr18Ni12Mo2Ti.
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Upper Cover.
Normal Temp:-20°C~+200°C.
Heat Radiation Type:-40°C~+450°C.
Gland Connection:bolted type.
Packing:V type PTFE.FLEXIBLE GRAPHITE.S.S BELLOWS.
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Valve Assembly.
Valve Core:Double guiding&double-seated plug type.
Cv Features:Linear,Equal Percentage or Quick opening.
Material:1Cr18Ni9Ti0Cr18Ni12Mo2Ti.
 
Actuator.
Model:Multi-spring diaphragm type actuator
Material of the diaphragm:NBR with reinforced polyester fabric.
Spring range:0.02~0.1/0.04~0.2Mpa.
Air Supply:0.14/0.16/0.28Mpa.
Air Supply Connector:M10*1.
Working Temp:-30~+70°C.
Valve Acting Type:air to close or air to open.
Accessories:positioner,,hand wheel.
Parameters:(with positioner.)
Leakage:<0.5%×Kv.
Intrinsic Erro:+/-1.5%.
Controlling Range:30:1.
GAZJHN Pneumatic diaphragm double-seated flow control valve Specifications
Kv,Movement&Allowable Differential Pressure.
DN(mm)
25
32
40
50
65
80
100
125
150
200
Size of seat(mm)
15
20
25
32
40
50
65
80
100
125
150
200
Flow coefficient Kv
4
6.3
10
16
25
40
63
100
160
250
400
630
Movement(mm)
16
25
40
60
Allowable differential pressure(Mpa)
5.8
4.9
3.8
2.9
4.0
3.3
2.6
3.6
3.0
2.3
Note:It refers to the differential pressure when the valves in open position.
Pneumatic Double Seated flow Control Valve Dimension.
Â
DN
Actuator
H
øA
H1
L
Normal TEMP
Heat Radiator Type.
PN1.6
PN4.0
PN6.4
25
ZHA22
498
648
285
117
185
190
205
32
ZHA22
501
651
285
120
200
210
220
40
ZHA22
522
691
285
139
220
230
240
50
ZHA22
530
699
285
144
250
255
265
65
ZHA34
645
815
363
188
275
285
295
80
ZHA34
661
835
363
208
305
310
325
100
ZHA34
687
887
363
220
350
355
370
125
ZHA34
1234
1444
363
270
410
425
440
150
ZHA45
1242
1492
470
280
450
460
475
200
ZHA45
1394
1654
470
320
550
560
570
  Ms Cathy
Yongjia Goole Valve Co.,Ltd
Heyi Industrial Zone, Oubei, Wenzhou,325105, China
Tel: +86-577-57781015,   Fax: +86-577-67985602
Mob: +86 13868628912,  Â
Â
Web: www.chinavalve1.com
GAZJHN Pneumatic diaphragm double-seated flow control valve.
The valve has double seats.The fluid outflow through the valve core of the upper and lower sealing surface.The unbalanced pressure is small.It is a balanced structure,which are widely used in petroleum,chemical,pharmaceutical,metallurgical,power plants,such as the industrial sector,to control of gas liquid medium such as steam.
GAZJHN Pneumatic diaphragm double-seated pressure flow valve Structure
Valve Body.
Structure:flowing through type globe valve with double-seated.
DN:25~300mm.
PN:1.6~10.0Mpa or class 150~class 600.
Connections:flanged type.
Material:WCB,HT200 ZG230-450 ZG1Cr18Ni9Ti.ZG0Cr18Ni12Mo2Ti.
Â
Upper Cover.
Normal Temp:-20°C~+200°C.
Heat Radiation Type:-40°C~+450°C.
Gland Connection:bolted type.
Packing:V type PTFE.FLEXIBLE GRAPHITE.S.S BELLOWS.
Â
Valve Assembly.
Valve Core:Double guiding&double-seated plug type.
Cv Features:Linear,Equal Percentage or Quick opening.
Material:1Cr18Ni9Ti0Cr18Ni12Mo2Ti.
Â
Actuator.
Model:Multi-spring diaphragm type actuator
Material of the diaphragm:NBR with reinforced polyester fabric.
Spring range:0.02~0.1/0.04~0.2Mpa.
Air Supply:0.14/0.16/0.28Mpa.
Air Supply Connector:M10*1.
Working Temp:-30~+70°C.
Valve Acting Type:air to close or air to open.
Accessories:positioner,,hand wheel.
Parameters:(with positioner.)
Leakage:<0.5%×Kv.
Intrinsic Erro:+/-1.5%.
Controlling Range:30:1.
GAZJHN Pneumatic diaphragm double-seated flow control valve Specifications
Kv,Movement&Allowable Differential Pressure.
DN(mm)
25
32
40
50
65
80
100
125
150
200
Size of seat(mm)
15
20
25
32
40
50
65
80
100
125
150
200
Flow coefficient Kv
4
6.3
10
16
25
40
63
100
160
250
400
630
Movement(mm)
16
25
40
60
Allowable differential pressure(Mpa)
5.8
4.9
3.8
2.9
4.0
3.3
2.6
3.6
3.0
2.3
Note:It refers to the differential pressure when the valves in open position.
Pneumatic Double Seated flow Control Valve Dimension.
Â
DN
Actuator
H
øA
H1
L
Normal TEMP
Heat Radiator Type.
PN1.6
PN4.0
PN6.4
25
ZHA22
498
648
285
117
185
190
205
32
ZHA22
501
651
285
120
200
210
220
40
ZHA22
522
691
285
139
220
230
240
50
ZHA22
530
699
285
144
250
255
265
65
ZHA34
645
815
363
188
275
285
295
80
ZHA34
661
835
363
208
305
310
325
100
ZHA34
687
887
363
220
350
355
370
125
ZHA34
1234
1444
363
270
410
425
440
150
ZHA45
1242
1492
470
280
450
460
475
200
ZHA45
1394
1654
470
320
550
560
570
  Ms Cathy
Yongjia Goole Valve Co.,Ltd
Heyi Industrial Zone, Oubei, Wenzhou,325105, China
Tel: +86-577-57781015,   Fax: +86-577-67985602
Mob: +86 13868628912,  Â
Â
Web: www.chinavalve1.com
Pneumatic Diaphragm Double Seated Flow Control Valve (GAZJHN)
Model NO.: GAZJHN
Usage: Flow Control
Application: Petroleum, Chemical, Metallurgy, etc.
Applicable Temperature Range: -20 Deg C ~ 200deg C, or -40 Deg C ~ 450 Deg C
Size: Dn25-Dn300
Pressure: Pn1.6-Pn10.0MPa or Class 150lb - Class 600lb
Trademark: Goole or OEM
Transport Package: Plywood Case
Specification: ISO 9001
Origin: Wenzhou, Zhejiang, China
HS Code: 8481804090
Model NO.: GAZJHN
Usage: Flow Control
Application: Petroleum, Chemical, Metallurgy, etc.
Applicable Temperature Range: -20 Deg C ~ 200deg C, or -40 Deg C ~ 450 Deg C
Size: Dn25-Dn300
Pressure: Pn1.6-Pn10.0MPa or Class 150lb - Class 600lb
Trademark: Goole or OEM
Transport Package: Plywood Case
Specification: ISO 9001
Origin: Wenzhou, Zhejiang, China
HS Code: 8481804090
GAZJHN Pneumatic diaphragm double-seated flow control valve.