Pneumatic diaphragm control valve are consist of the multi-spring pneumatic actuator and low flow resistance micro control valve body, the multi-spring pneumatic actuator is light weight, low height, and easy equipment.
The flow passage of the valve body is "S" streamlined, with compact structure, light weight, sensitive, small pressure drop, large capacity, precise flow characteristics, easy maintenance, and suitable for strict working condition.
The pneumatic diaphragm control valve can be equiped with positioner, and realize the regulation of the medium in the pipe. Small penumatic control valve is widely used in the precise control of the medium parameters, such as pressure, temperature, levels, and so on.
Small pneumatic control valve is particularly suitable for allowing a small leakage, small differential pressure valve and a certain viscosity and containing a small amount of fiber media applications.
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Body parameters |
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DN |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
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Seat DN |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
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Rated co efficient KV |
Single seat |
6.9 |
11 |
17.6 |
27.5 |
44 |
69 |
110 |
176 |
275 |
440 |
630 |
875 |
1250 |
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Sleeve |
6.3 |
10 |
16 |
25 |
40 |
63 |
100 |
160 |
250 |
360 |
570 |
850 |
1180 |
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Allowed pressure differencial(MPa) |
Single seat |
3.8 |
3.2 |
3 |
2 |
1.8 |
1.5 |
1.4 |
1 |
0,7 |
0.6 |
0.5 |
0.3 |
0.1 |
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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 |
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Rated Travel(mm) |
16 |
25 |
40 |
60 |
100 |
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Actuator Model |
ZHA/B-22 |
ZHA/B-23 |
ZHA/B-34 |
ZHA/B-45 |
ZHA/B-56 |
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Body type |
Straight Foundry Ball Type |
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Nominal Pressure |
PN1.6\2.5\4.0\6.4\10.0 |
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Flange standard |
GB/T9113\JB/T79\HG20594,ASME B16.5,JIS B2002 |
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Connection |
Flange , Screw, Welding |
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Bonnet type |
Standard type:-17~+250C,High temperature type: +250~+450C,Low temperature: -60~-196C,Bellow seal type: -40~+350C |
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Gland type |
Bolt Clamp |
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Packing |
Graphite , PTFE,Cushion,etc |
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Valve body |
WCB/CF8/CF8M/CF3/CF3M/GrMo Steel/WCB+F46 |
We, D-XIN VALVE Co., Ltd. is the competative supplier and the valve manufacturer in China. We located in Fenghuang Industrial Zone, Xianning, Hubei, China. Our company are specialized in designing, manufacturing, and marketing various of valves.Production and testing equipments, strong engineering capability.
Our main products are cast steel and forge steel gate valve, check valve, globe valve, butterfly valve, ball valve. With several year's developing, we have build longsterm business relationship with some multinational coopration. Products are sold to Europen, USA, Middle East, Africa and so on.
We provide best products, and most considerate serive for satisfying our customers all around the world. And offering technical expertise and a willingness to work with the customer. Looking forward to cooperate with your esteemed company, and D-XIN VALVE will always beyond your imagination.
