Pneumatic finned bonnet high temperature control valve

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Pneumatic finned bonnet high temperature control valve feature

Pneumatic finned bonnet high temperature control valve is finned bonnet design for high temperature to radiate, Pneumatic finned bonnet high temperature control valve with spring pneumatic diaphragm actuator (or piston pneumatic actuator) which is a low flow resistance control valve, multi spring actuator of low height, light weight, simple equipment. Pneumatic finned bonnet high temperature control valve flow channel was streamlined S, the control valve has the advantages of compact structure, light weight, flexible action, small pressure drop loss, valve capacity, flow characteristics of precision, convenient maintenance, Pneumatic finned bonnet high temperature control valve regulating mechanism adopts balanced valve plug valve structure, has good stability, not easy to vibration, low noise the temperature sensitivity, small. High temperature pneumatic control valve is especially suitable for leakage requirements is not high, high temperature.
Pneumatic finned bonnet high temperature control valve Bonnet structure

Component name	Control Valve Material
Body/Bonnet	WCB/WCC/WC6/CF8/CF8M/CF3M
Valve spool/Seat	304/316/316L(overlaying stellite alloy)
Packing	flexible graphite
Gasket	Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket
Diaphragm Cover	Normal:Q235,Special:304
Diaphragm	NBR with reinforced polyester fabric
Spring	Normal:60Si2Mn,Special:50CrVa
Control valve stem	2Cr13/17-4PH/304/316/316L

Pneumatic finned bonnet high temperature control valve Flow characteristic	Linear, percentage, quick open
Allowable range	50: 1 (CV<6.3 30: 1)
Rated Cv value	Percentage CV1.6~630 ，linear CV1.8~690
Pneumatic high temperatyre control valve Allowable leakage	Metal seal: IV grade（0.01% rated capacity） Leakage standard: GB/T 4213
Pneumatic finned bonnet high temperature 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

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