Zhejiang Keshida Self Control Valve Co., Ltd
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    Shanghai Office: Chonggu Town, Qingpu District, Shanghai.
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ZMQ Pneumatic Thin Film Cut off Valve
ZMQ Pneumatic Thin Film Cut off Valve
Product details

Product Overview

ZMQ pneumatic diaphragm cut-off valve is the execution unit of the pneumatic unit combination instrument. It has the advantages of simple structure, high operating force, small size, light weight, low flow resistance, large valve capacity, good sealing performance, and easy maintenance. And it is widely used in automation control systems in production processes such as petroleum, chemical, metallurgical, power, and textile industries.

Main Performance and Technical Parameters

Nominal diameter DN (mm)

15

20

25

32

40

50

65

80

100

125

150

200

Rated flow coefficient kv

Sleeve

11

20

30

48

75

120

190

300

480

760

Single seat

5

7

11

20

30

48

75

120

190

300

480

760

tee

Rated stroke (mm)

8

12

20

25

40

50

Allowable leakage amount

Hard seal (L/H)

Sleeve 5 × 10-5 valve rated capacity, single seat, tee 1.2 × 10-7 × valve rated capacity

Soft seal (ml/min)

nothing

Medium temperature ℃

-200~+200- 40~+450

Effective area of membrane (cm2) (membrane type cut-off valve)

100

200

400

600

1000

Nominal pressure PN (MPa)

1.6 4.0 6.4

Allowable pressure difference (MPa)

Single seat

6.4

6.4

3.8

2.5

2.9

1.8

2.0

1.3

0.83

0.8

0.55

0.52

Sleeve

6.4

Signal pressure KPa

200 (film sheet)

valve body

Ht200 ZG230-450ZG1Cr18Ni9Ti

Valve plug sleeve

1Cr18Ni9Ti Cr18Ni12Mo2Ti

Valve core and seat

1Cr18Ni9Ti Cr18Ni12Mo2Ti

Packing material

Polytetrafluoroethylene flexible graphite

Can be equipped with accessories

Air filter pressure reducer, solenoid valve, valve position feedback device, etc

External dimensions

Pneumatic diaphragm cut-off valve

Nominal diameter (mm)

15

20

25

32

40

50

65

80

100

125

150

200

Rated flow coefficient

5

8

12

17

29

43

70

110

165

275

440

690

A(mm)

194

230

306

394

496

L(mm)

PN16

150

160

180

200

230

290

310

350

400

480

600

PN64

230

260

300

340

380

430

500

550

650

D(mm)

PN16

95

105

115

140

150

165

185

200

220

250

285

340

PN64

105

130

140

155

170

180

205

215

250

295

345

415

H2(mm)

325

346

360

369

477

517

540

742

822

877

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