info@shxvalve.cominfo@shxvalve.com
Tel:+86-17717520739
Email：info@shxvalve.com
Address: NO.720, Suide Road, Jiading District,Shanghai, China.
Model：
Pneumatic high pressure control valve adopts compact valve body, with a shade flow passage that features low pressure loss, allows a large flow capasity and rangeability. The valve plug of Pneumatic high pressure control valve is highly vibration-resistant as the control valve is held by a top guide section which has a large slideing area. The flow shut-off performance complies with the ANSI Standard. The actuator of pneumatic control valve integrated with simplest mechanisms utilizes a compact yet powerful diaphragm actuator loaded with multiple springs.
The Pneumatic high pressure control valve is widely applicable for reliable control of high temperature, high pressure process lines.
| Pneumatic high pressure control valve Body type: | casting globe type |
| Spool type: | single seat,cage guiede |
| Nominal size: | DN20~80 NPS 3/4〞~ 3〞 |
| Nominal pressure: | PN160 ~ 420、 CLASS 900LB ~ 2500LB |
| Connection: flange: | FF、RF、MF、RTJ |
| Welding: | SW、BW |
| Flange dimension: | According to to IEC 60534 |
| Pneumatic high pressure control valve Bonnet type: | Ⅰ:standard type（-20℃~230℃） Ⅱ:Radiator type: （-45℃~ high than 230℃ occasion） Ⅲ:Low temperature extended type（-196℃~ -45℃） Ⅳ:Bellow seal type Ⅴ:Warm insulation Jacket type |
| Packing: | V type PFTE packing, flex. graphite packing, etc. |
| Gasket: | Metal graphite packing |
| Pneumatic Control valve Actuator: | Pneumatic:multi-spring diaphragm actuator, piston type actuator. |
| Component name | Pneumatic Control Valve Material |
| Body/Bonnet | WCB/WCC/WC6/CF8/CF8M/CF3M/A105/F11/F22 |
| Valve spool/Seat | 304/316/316L(overlaying stellite alloy) |
| Packing | Normal:-196～150℃ is PTFE,RTFE,>230℃ is flexible graphite |
| Bellow | 304,316,316L |
| Gasket | Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket |
| Stem | 2Cr13/17-4PH/304/316/316L |
| Diaphragm Cover | Normal:Q235,Special:304 |
| Diaphragm | NBR with reinforced polyester fabric |
| Spring | Normal:60Si2Mn,Special:50CrVa |
| Pneumatic high pressure control valve Flow characteristic | Linear, percentage | |
| Allowable range | 50: 1 (CV<6.3 30: 1) | |
| Rated Cv value | Percentage 1.6~630/ linear CV1.8~690 | |
| Pneumatic high pressure control valve Allowable leakage |
Metal seal: IV grade（0.01% rated capacity） Soft seal: VI grade（foam grade） Leakage standard: GB/T 4213 |
|
| Pneumatic high pressure control valve Performance | ||
| Intrinsic error(%) | ±1.5 | |
| Return difference(%) | ≤1.5 | |
| Dead zone(%) | ≤0.6 | |
| Difference from beginning to end point(%) | ±2.5 | |
| Rated travel difference(%) | ≤2.5 | |
| Special test | Material penetration flaw detection (PT), radiator test (RT), flow characteristic test, low temperature test. |
| Special treatment | Trim nitrogen treatment, seat hard alloy treatment. |
| Special rinse | Degreasing and dehydration treatment |
| Special condition | Special piping or connection, vacuum condition, S.S fastener, special coating. |
| Special dimension | Customized face to face length or dimension |
| Test and inspection | Third party test report |
| Pneumatic high pressure control valve Type\ Method |
Pneumatic diaphragm actuator |
| ZH23～ZH56 | |
| Multi-spring type | |
| Usage | Regulating type, ON-OFF type |
| Air supply pressure or Power supply voltage | Air supply pressure (Spring range) 140（20～100）Kpa G 240 (40～200) Kpa G 280 (80～240) Kpa G |
| Connector | Air pipe connector: RC1/4 |
| Direct action | Pressure increase, stem descend, valve close. |
| Reaction | Pressure increase, stem ascend, valve open. |
| Input signal | 40～20mA.DC（with positioner） |
| Lag | ≤1%FS（with positioner） |
| Linear type | 2%FS（with positioner） |
| Environmental temperature | -10℃～+70℃ |
| Pneumatic high pressure control valve Accessories | E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch Non-standard accessories, need special customized notes. |
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