Products > Control valve > Pneumatic film temperature control valve

Pneumatic film temperature control valve

Model: ZJSGW-P (M)
Nominal diameter: DN20 ~ 300mm
Nominal pressure: PN1.6~10.0MPa
Ambient temperature: -30 ~ + 70 ℃
Medium gas, liquid, vapor, etc.: Medium
Drive mode: pneumatic
Design criteria: GB / T17213
Flange standard: GB / T9113, JB / T79 , HG20594 and other standard
Inspection standards: GB / T4213
Form connect: flange (FF RF RTJ), welding (SW BW), thread ( Suitable for 1 "or less
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First, pneumatic high temperature regulating valve  product overview

ZJSGW-P (M) series of pneumatic high temperature control valve, the multi-spring pneumatic film actuator and low resistance high temperature regulating valve body composition, multi-spring actuator low height, light weight, easy to install. 
 Pneumatic high temperature control valve body flow was S streamline, with compact, light weight, sensitive, small pressure drop loss, valve capacity, accurate flow characteristics, easy maintenance, etc., can be used for harsh working conditions. Pneumatic membrane thermostatic valve equipped with electric - gas valve positioning or pneumatic - pneumatic valve positioner, by inputting 4-20mA control signal to control the operation, can realize the process pipeline fluid medium automatic regulation and control. 
 Pneumatic temperature control valve is widely used in gas, liquid, steam and other media process parameters such as pressure, flow, temperature, liquid level and other parameters remain at a given value. 
 Pneumatic high temperature control valve is particularly suitable for allowing a small amount of leakage, small pressure difference between the valve and the high temperature of the occasion.
 

Second, pneumatic temperature control valve  main technical parameters

, the valve body

Body formDirect casting ball valve

Nominal diameter

DN20 ~ 300mm

Nominal pressure

PN 1.6, 2.5, 4.0, 6.4, 10.0 MPa

Flange standard

GB / T9113, JB / T79, HG20594 and other standards

Connection Type

Flange (FF RF RTJ), Weld (SW BW), Thread (For 1 "or less)

Cover form

High temperature type +250 ~ +450 ℃, ultra-high temperature type +250 ~ +560 ℃

Gland type

Bolt compression type

Sealed packing

V-type PTFE packing, PTFE impregnated asbestos packing, asbestos textile packing, graphite packing

Body material

Cast steel (WCB), stainless steel (CF8, CF8M, CF3, CF3M), chrome molybdenum steel


 2 
, the valve parts

Spool formSingle seat, sleeve structure

Flow characteristics

Linear, equal percentage

Spool material

Stainless steel (304,304L, 316,316L)


 3 
, implementing agencies and annex, the role of the form

Actuator type

ZHA / B multi-spring film actuator

Actuator model

ZHA / B-22

ZHA / B-23

ZHAB-34

ZHA / B-45

ZHA / B-56

Effective area (cm2)

350

350

560

900

1400

Travel (mm)

10,16

25

40

40,60

100

Spring Range (KPa)

20 to 100 (standard), 20 to 60, 60 to 100, 40 to 200, 80 to 240

Diaphragm material

Nylon cloth rubber clip, EPDM clip nylon cloth

Supply pressure

140 ~ 400KPa

Air source interface

RC1 / 4 "

Ambient temperature


Can be equipped with accessories

Locator, air filter pressure reducer, Paul-valve, hand wheel agencies

The role of form

Air-off (B) - Valve open during loss of air (FO); Air open (K) - Valve closed during loss of air (FC)


 Third, pneumatic temperature control valve  
main performance indicators

project

Without locatorWith locator

Basic error%

± 5.0

± 1.0

Backlash%

≤3.0

≤1.0

dead zone%

≤3.0

≤0.4

Always point deviation%

Open air

Start point

± 2.5

± 1.0

Start point

± 5.0

± 1.0

Qi off

Start point

± 5.0

± 1.0

end

± 2.5

± 1.0

Rated travel deviation%

≤2.5

Leakage L / h

0.01% × valve rated capacity

Adjustable range R

30: 1


 Fourth, pneumatic high temperature regulating valve  
rated flow coefficient Kv , to allow pressure

Nominal diameter DN (mm)20253240506580100125150200250300

Seat diameter (dn)

20

25

32

40

50

65

80

100

125

150

200

250

300

Rated flow coefficient (KV)

Single seat

6.9

11

17.6

27.5

44

69

110

176

275

440

630

875

1250

Sleeve

6.3

10

16

25

40

63

100

155

250

370

580

900

1300

Allowable pressure difference (MPa)

Single seat

3.8

3.2

3.0

2.0

1.8

1.5

1.4

1.0

0,7

0.6

0.5

0.3

0.1

Sleeve

6.4

6.4

5.2

5.2

4.6

4.6

3.7

3.7

3.5

3.1

3.1

2.6

2.2

Rated travel (mm)

16

25

40

60

100

Actuator model

ZHA / B-22

ZHA / B-23

ZHA / B-34

ZHA / B-45

ZHA / B-56

 

Fifth, pneumatic high temperature control valve  main connection size

DN (mm)20253240506580100125150200250300

L

PN16 / 25

181

184

200

222

254

276

298

352

410

451

550

640

880

PN40

194

197

200

235

267

292

317

368

425

473

640

760

910

PN64

206

200

210

251

286

311

337

394

440

508

670

810

950

H

PN16 / 25

52.5

57.5

75

75

85.5

92.5

100

110

142.5

158

170

195

230

PN40

52.5

57.5

75

75

82.5

92.5

100

117.5

150

167.5

187.5

205

245

PN64

65

40

85

85

90

102.5

107.5

125

172.5

195

207.5

230

260

H1

370

396

428

428

436

415

464

507

690

840

632

725

882

H2

298

298

298

298

298

380

380

380

510

510

510

650

650

H3

180

180

180

180

180

236

236

236

310

310

310

380

380

L1

280

280

280

280

280

350

350

350

475

475

475

560

560

A

282

282

282

282

282

360

360

360

470

470

470

580

580

C

220

220

220

220

220

270

270

270

320

320

320

400

400