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ZJHN diaphragm Pneumatic double-seated control valve
  • ZJHN diaphragm Pneumatic double-seated control valve

The ZJHN Diaphragm Pneumatic double seated Control Valve has double seats, the fluid outflow through the valve core of the upper and lower sealing surface.

Details

 

ZJHN Pneumatic diaphragm double-seated control valve


ZJHN精小型气动薄膜双座调节阀

ZJHN Pneumatic Diaphragm double seated 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.

Valve Body

 

Valve Body: Flowing through type globe valve with double-seated
DN
25~300mm
PN
PN1.6- 10.0MPa or Class 150 – Class 600
Connections
Flanged Type
Material: WCB, HT200 ZG230—450 ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti

尺寸图

 

Upper Cover

Normal Temp:-20℃~+200℃
Heat Radiation Type.:-40℃~+450℃
Gland Connection: Bolted Type
Packing :V type PTFE
Flexible GraphiteS.S. Bellows

Valve Assembly

Valve Core: Double guiding & double-seated plug type
Cv features: Linear, Equal Percentage or Quick opening.
Material:1Cr18Ni9Ti 0Cr18Ni12Mo2Ti

Actuator

 

Model: Multi-Spring Diaphragm type Actuator

Material of the Diaphragm: NBR with reinforced polyester fabric

Spring Range0.02~0. 10.04~0.20MPa
Air Supply
0.14 0.16 0.28MPa
Air Supply Connector
M10×1
Working Temp.
-30~+70℃

尺寸图

 

Valve Acting Type: Air to Close or Air to Open

Accessories: Positioner, hand wheel

Parameters: ( with Positioner)

Leakage: 0.5% x Kv

Intrinsic Erro: ±1.5%
Controlling Range: 30:1

Kv, Movement & Allowable Differential Pressure

DNmm

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 PressureMPa

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 valve in open position.

◆ Double Seated Control Valve Dimension

DN

Actuator

H

ΦA

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

 

尺寸图

 

 

Hits:  UpdateTime:2015-04-30 10:32:46  【Printing】  【Close
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