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KPM Pneumatic Bellows Control Valve
Technical parameters: KPM Pneumatic Bellows Valve Regulating Valve Rated stroke (mm): 16, 25, 40, 60, 100 actuator models: ZHA/B-22, ZHA/B-23, ZHA/B-3
Product details
KPM Pneumatic Bellows Valve Regulating ValveIt is based on the pneumatic single seat (sleeve) regulating valve and equipped with a bellows for sealing. The valve core adopts an upward guide structure, and the valve structure is compact with an S-shaped channel, which reduces pressure drop loss, increases flow rate, has a wide adjustable range, and high precision of flow characteristics, in compliance with the IEC534 standard. The leakage rate of the regulating valve complies with ANSI B16.104 standard.
Characteristics of bellows pneumatic control valve:
The pneumatic bellows regulating valve is equipped with a multi spring thin film actuator, which has a compact structure and high output force. The product complies with GB/T4213-92.
Application scenarios of bellows pneumatic control valve:
The valve cover of the pneumatic bellows regulating valve adopts a bellows sealing structure, which is suitable for regulating extremely toxic, flammable, explosive, volatile and rare precious metal media. In addition, pneumatic bellows sealed regulating valves can also be used in vacuum applications.
Technical parameters of bellows pneumatic control valve:
| Nominal diameter (DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Valve seat diameter (dn) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| Rated flow coefficient (KV) | Single seat | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 875 | 1250 |
| sleeve | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 155 | 250 | 370 | 580 | 900 | 1300 | |
| Allowable pressure difference (MPa) | Single seat | 3.8 | 3.2 | 3.0 | 2.0 | 1.8 | 1.5 | 1.4 | 1.0 | 0,7 | 0.6 | 0.5 | 0.3 | 0.1 |
| 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 | |
| Nominal pressure (MPa) | 1.6, 2.5, 4.0, 6.4 | |||||||||||||
| Rated stroke (mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
| Model of actuator | ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | |||||||||
| Traffic characteristics | Equal percentage, straight line type | |||||||||||||
| Valve cover form | Bellows sealing type -40~+350 ℃ | |||||||||||||
| Cover form | Bolt compression type | |||||||||||||
| Packing | V-shaped polytetrafluoroethylene packing, V-shaped flexible graphite packing | |||||||||||||
| Valve core form | Single seat and sleeve type | |||||||||||||
Structural diagram of bellows pneumatic control valve:
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