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Pneumatic Membrane Angle Control Valve adopts a top guide structure and is composed of a multi-spring pneumatic diaphragm actuator and an angle valve body. Pneumatic angle control valve has the advantages of compact structure, light weight, sensitive operation, streamlined fluid passage, low pressure drop loss, large valve capacity, accurate flow characteristics, and easy disassembly and assembly. Pneumatic membrane angle control valve is equipped with electro-pneumatic valve positioning or pneumatic valve positioner, which can realize automatic adjustment and control of fluid medium in process pipeline. Pneumatic high-pressure angle type control valve has the advantages of small size, light weight, top-guide structure of the valve core, simple flow path, low resistance and easy flushing. Pneumatic angle control valves are widely used to accurately control gases, liquids and other media. Process parameters such as pressure, flow, temperature, and liquid level are maintained at given values. Pneumatic angle high pressure control valve is especially suitable for the small leakage of small valve before the valve allows high pressure, low pressure, high viscosity, containing suspended solids and particulate matter adjustment, to avoid coking, clogging, easy self-cleaning and cleaning occasions.
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) |
straight line | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 100 | 176 | 275 | 440 | 690 | 875 | 1250 |
Equal percentage |
6.3 | 10 | 15 | 25 | 40 | 64 | 100 | 160 | 250 | 400 | 630 | 850 | 1180 | |
Allowable pressure difference(MPa) |
6.4 | 6.4 | 5.0 | 2.8 | 1.7 | 1.7 | 1.0 | 6.0 | 4.8 | 3.3 | 1.8 | 1.5 | 0.8 | |
Nominal pressure(MPa) | 1.6、2.5、4.0、6.4、10.0 | |||||||||||||
Rated route(mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
With actuator type | ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | |||||||||
Valve cover form | standard type(-17~+250℃)、High temperature type(+250~+450℃)、Low temperature type(-40~-196℃)、Bellows sealed type(-40~+350℃) | |||||||||||||
Capping form | Bolt compression type | |||||||||||||
Seal packing | V type PTFE packing、V type flexible graphite filler | |||||||||||||
Valve body material | Carbon steel(WCB、WCC)、stainless steel(CF8、CF8M、CF3、CF3M、 Biphase stainless steel2520) |
Valve core form | single seat Plunger type、 sleeve guiding type |
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-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 |
Effective area(cm2) | 350 | 350 | 560 | 900 | 1400 |
route (mm) | 10、16 | 24 | 40 | 40、60 | 100 |
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,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 | 30:1 |