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 |
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Allowable leakage amount |
Hard seal (L/H) |
Sleeve 5 × 10-5 valve rated capacity, single seat, tee 1.2 × 10-7 × valve rated capacity |
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Soft seal (ml/min) |
nothing |
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Medium temperature ℃ |
-200~+200- 40~+450 |
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Effective area of membrane (cm2) (membrane type cut-off valve) |
100 |
200 |
400 |
600 |
1000 |
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Nominal pressure PN (MPa) |
1.6 4.0 6.4 |
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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 |
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Signal pressure KPa |
200 (film sheet) |
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valve body |
Ht200 ZG230-450ZG1Cr18Ni9Ti |
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Valve plug sleeve |
1Cr18Ni9Ti Cr18Ni12Mo2Ti |
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Valve core and seat |
1Cr18Ni9Ti Cr18Ni12Mo2Ti |
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Packing material |
Polytetrafluoroethylene flexible graphite |
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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 |
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L(mm) |
PN16 |
150 |
160 |
180 |
200 |
230 |
290 |
310 |
350 |
400 |
480 |
600 |
|
PN64 |
230 |
260 |
300 |
340 |
380 |
430 |
500 |
550 |
650 |
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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 |