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Pneumatic high pressure control valve product description
ZJHP/M-GY pneumatic high pressure control valve is a special valve designed for high pressure systems. It is used in conjunction with pneumatic (with electric-pneumatic converter) regulation instruments and is used for automatic adjustment and remote control of business processes in the chemical, petroleum, and power industries. Pneumatic high pressure control valve consists of two parts: pneumatic diaphragm actuator and high pressure regulator valve. Pneumatic high-pressure control valve structure type is straight single-cage type, spool is plunger shape, used for high pressure differential valve core, the head is infiltrated or embedded with carbide, to resist the high pressure difference in the case of flushing and gas Eclipse, increase service life. Due to the high pressure difference, the media has a greater imbalance force on the valve core, and the actuator with a higher degree of rigidity has been used in the design, and valve positioners are generally used. The action of the pneumatic high-pressure cage regulator stems from the thrust generated by the signal pressure on the membrane, which causes the push rod to push the valve core to move accordingly, which not only regulates the stroke of the valve. Changes in the stroke change the flow area of the valve to adjust process parameters such as pressure, temperature, flow, and liquid level.
| 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 |
| Cage type | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 155 | 250 | 370 | 580 | 900 | 1300 | |
| Allowable pressure difference(MPa) |
≤ Nominal pressure | |||||||||||||
| Nominal pressure(MPa) | 10.0、16.0、25.0、32.0、45.0 | |||||||||||||
| Rated route(mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
| Valve cover form | standard type(-17～+250℃)、High temperature type(+250～+450℃) | |||||||||||||
| Capping form | Bolt compression type | |||||||||||||
| Seal packing | V type PTFE packing、V type flexible graphite filler | |||||||||||||
| fValve body material | Carbon steel（WCB、WCC）、stainless steel（CF8、CF8M、CF3、CF3M、 Biphase stainless steel2520） | |||||||||||||
| Valve core form | High-pressure cage single seat structure, sleeve structure, labyrinth structure |
| Flow characteristics | Linear, equal percentage |
| valve core material | stainless steel (304、316、316L) |
| Configure Actuator Category |
ZHA/B Multi-spring film actuator |
| Actuator model | ZHA/B-11 |
| Effective area(cm2) | 200 |
| route (mm) | 10、16 |
| Spring range(KPa) | 20～100（standard）、20-60、60-100、40-200、80-240 |
| Diaphragm material | Nitrile rubber clip nylon cloth, ethylene propylene rubber clip nylon cloth |
| Air supply pressure | 140～400KPa |
| Air interface | RC1/4" |
| Ambient temperature | -30～+70℃ |
| equipped with accessories |
Locator, air filter pressure reducer, position valve, route switch, valve positioner, handwheel mechanism, etc. |
| Form of action | Air-to-close (B)—Valve open (FO) when deaeration; Air-opening (K)—Valve off (FC) when deaeration |
| Item | Without positioner | With positioner | ||
| Basic error % | ±5.0 | ±1.0 | ||
| Backlash % | ≤3.0 | ≤1.0 | ||
| dead zone % | ≤3.0 | ≤0.4 | ||
| Starting to end point deviation % |
Air open | Starting point | ±2.5 | ±1.0 |
| Starting point | ±5.0 | ±1.0 | ||
| Air shut | Starting point | ±5.0 | ±1.0 | |
| end point | ±2.5 | ±1.0 | ||
| Rated route deviation % | ≤2.5 | |||
| Leakage L/h | 0.01%× Valve rated capacity | |||
| Adjustable range R | 50：1 | |||
