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Pneumatic Emergency Shut-off Ball Valve

The pneumatic emergency Shut-off ball valve is composed of a pneumatic actuator and an O-shaped ball valve. The connection between the pneumatic switch ball valve body and the actuator adopts a direct connection method, and can be equipped with a double acting pneumatic actuator or a single acting pneumatic actuator. The gas source pressure is 0.4-0.7 MPa.

Features of pneumatic emergency shut-off ball valve products

  1. Fluid cutoff and flow.
  2. Reliable sealing, good flow performance, low flow resistance, and convenient loading and unloading.
  3. Adopting direct connection method, it has simple connection, compact structure, and stable action.

Applicable scenarios for pneumatic emergency shut-off ball valves

Especially suitable for situations where the medium is viscous, contains particles, and has fiber properties. Currently, this pneumatic switch ball valve is widely used in the fields of petroleum, chemical industry, metallurgy, light industry, paper making, power plants, refrigeration, and other work.

Performance parameters of pneumatic emergency shut-off ball valve:

Nominal diameter (mm)

15

20

25

32

40

50

65

80

100

125

150

200

250

300

Flow coefficient Kv

21

38

72

112

170

273

384

512

940

1452

2222

3589

5128

7359

Nominal pressure (MPa)

PN1.6¡¢2.5¡¢4.0¡¢6.4MPa

Leakage rate

Soft seal: zero leakage; Hard seal: ¡Ü 10-5 of rated flow

Valve body form

Two stage valve body (floating ball)

Two stage valve body (fixed ball)

Trim form

O-shaped spherical trim

Seal filler

PTFE, metal graphite spiral wound gasket

Connection form

Flanges, welding, threading

Flow characteristics

Quick opening characteristics

Adjustable range

DN15-65

DN80-300

250:01:00

350:01:00

Applicable temperature

Sealing surface

PTFE¡Ü150¡æ¡¢ RTFE¡Ü180¡æ ¡¢PPL¡Ü300¡æ¡¢ Hard seal¡Ü450¡æ

Configure actuator

Can be equipped with GT, AT, ST series single and double acting pneumatic actuators

Control mode

Two position switch control

Pneumatic emergency cut-off ball valve actuator parameters


Actuator model

GT, AT, AW series single and double acting pneumatic actuators

Air supply pressure

0.4¡«0.7MPa

Air source interface

G1/4"¡¢G1/8"¡¢G3/8"¡¢G1/2"

Environment temperature

-30¡«+70¡æ

Mode of action

Single acting actuator: air closed (B) - valve position open (FO) in case of loss of air; Air open (K) - valve position closed in case of loss of gas (FC)

Double acting actuator: air closed (B) - valve position held (FL) in case of loss of air; Air Open (K) - Valve Position Hold (FL) in Loss of Air


External dimensions of pneumatic emergency shut-off ball valve


Nominal diameter DN(mm)

Main size

Flange size

PN1.6MPa

PN2.5MPa

L

H

L1

D

D1

D2

n-¦Õd

D

D1

D2

n-¦Õd

15

130

185

140

95

65

46

4/14

95

65

46

4/14

20

140

191

140

105

75

45

4/14

105

75

56

4/14

25

150

193

140

115

85

65

4/14

115

85

65

4/14

32

165

212

164

140

100

76

4/18

140

100

76

4/18

40

180

217

164

150

110

84

4/18

150

110

84

4/18

50

200

260

190

165

125

99

4/18

165

125

99

4/18

65

220

293

210

185

145

118

4/18

185

145

118

8/18

80

250

323

247

200

160

132

8/18

200

160

132

8/18

100

280

382

276

220

180

156

8/18

235

190

156

8/22

125

320

468

348

250

210

184

8/18

270

220

184

8/26

150

360

510

378

285

240

211

8/22

300

250

211

8/26

200

400

655

524

340

295

266

12/22

360

310

274

12/26

250

630

/

/

405

355

319

12/26

425

370

330

12/30

300

750

/

/

460

410

370

12/26

485

430

389

16-30

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