Pneumatic three-way valve membrane

Products > Control valve > Pneumatic three-way valve membrane

Pneumatic three-way valve membrane

Model: ZXM (ZJHM) Type
Nominal diameter: DN25 ~ 200mm
Nominal pressure: PN10 ~ 64MPa
Temperature: -60 ℃ ~ + 450 ℃
Main material: HT200 ZG230 ~ 450 ZG1Cr18Ni9Ti
Flange standard: Cast iron flanges by GB4216.5 -84 Cast steel flange according to GB9113-88, JB / T79.1-94
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Product description:

ZX new series of pneumatic film three-way valve with cylindrical thin-walled window-shaped spool-oriented, different from the plunger spool guide. Equipped with multi-spring actuator. Has the advantages of simple structure, light weight, small size, easy disassembly. Widely used in precise control of gas, liquid and other media, process parameters such as pressure, flow, temperature, liquid level at a given value. Suitable for a fluid through the three-way valve is divided into two out or the two fluids through the three-way valve into a fluid situation. 

This series of products have three links and three links diversion two. 
Nominal pressure of 1.6,4.0,6.4 MPa; body diameter range DN25 ~ 200. Applicable fluid temperature from -60 ℃ ~ +450 ℃. Leakage standard Ⅳ level. Flow characteristics of a straight line, two kinds of parabola.

 

Features:

 1, the direction of fluid on the role of the valve are in a state of flow, so the valve can work stably. 
 2, in addition to the bonnet at the bushing orientation, the valve core side and the inner surface of the valve seat also has a guiding role in guiding a large area, reliable work. 
 3, the implementing agencies using multi-spring structure, a 30% reduction in height, weight reduction of 30%.
 

Part Information:

 Valve body, bonnet: HT200 ZG230 ~ 450 ZG1Cr18Ni9Ti Valve 
 seat, seat: 1Cr18Ni9Ti 
 Corrugated diaphragm: Nitrile rubber clamp Reinforced polyester Fabric 
 packing: Teflon, flexible graphite 
 Spring: 60si2Mn 
 Membrane cover: A3 
 Push rod, stem : 
 2Cr13, 1Cr18Ni9Ti Bushing: 2Cr13 
 Gasket: Asbestos rubber, 10,1 Cr18Ni9 Asbestos Wound Gasket
 

Technical Parameters:

Nominal diameter DN (mm)

25

32

40

50

65

80

100

125

150

200

Limited Data

Coefficient (KV)

confluence

8.5

13

21

34

53

85

135

210

340

535

Shunt

8.5

13

21

34

53

85

135

210

340

535

Confluence structure can be used instead

Rated stroke L (mm)

16

25

40

60

Diaphragm effective area Ae (cm 2)

280

400

600

1000

Nominal pressure PN (MPa)

1.6 4.0 6.4

Inherent flow characteristics

Straight line, parabola

Inherent adjustable R

30

Operating temperature t (℃)

Ordinary type: cast iron -20 ~ 200 cast steel -40 ~ 250 cast stainless steel -60 ~ 250

Cooling type: cast steel -40 ~ 450 cast stainless steel -60 ~ 450

Two media temperature difference t (℃)

Cast iron ≤ 150 cast steel, cast stainless steel ≤ 200

Signal range Pr (kPa)

40 ~ 200

Air pressure Ps (MPa)

0.14 ~ 0.4

Allow leakage

10 -4 X valve rated capacity

Allowable pressure difference △ P (MPa)

0.86

0.75

0.48

0.31

0.27

0.18

0.11

0.12

0.09

0.05

* This product performance indicators to implement GB / T4213-92 standards
 

Specifications Weight:

Nominal diameter

25

32

40

50

65

80

100

125

150

200

A

282

306

306

306

394

394

394

498

498

498

H1

PN16

121

130

140

153

178

190

200

260

320

360

PN40

130

140

150

160

185

200

220

280

320

380

PN64

160

170

180

200

230

250

282

310

430

480

H

normal type

PN16

PN40

490

480

540

580

710

730

750

895

1005

1045

PN64

560

561

596

630

760

798

876

892

1200

1263

High temperature type

600

615

650

670

850

870

900

1040

1330

1370

Weight (kg)

normal type

PN16

PN40

21

23

33

36

64

72

92

155

193

286

PN64

25

28

40

45

74

85

112

180

243

336

High temperature type

Weight increase (5-10)%

Note: 1, the table high temperature type and weight according to PN16 as the bas

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