Pneumatic double seated control valve Features & Specifications

Type:double seated control valve

Size:DN20~DN500 1/2”-20”

Pressure:PN1.6MPa~ PN42 MPa 150LB-2500LB JIS 10K ~JIS 40K

End connection:RF RJ ,BW Material:WCB，WC6，LCB,CF8，CF8M，CF3M, 904L, 316Ti A105 ,F304,F316, Duplex stainless steel, Monel, Hastelloy, (Special Materials on Request)

Bonnet type:

Normal type（P）：－45～＋250℃

Extend type with I type-High temperature type（EI）：＋250～＋566℃

Extend type with EII type--cryogenic type（EII）：－45～－196℃

Pneumatic double seated control valve Trim type:

Pressure-balanced spool with balance seal ring

Flow characteristics: Equal Percentage ,Linear type

Leakage class:class IV(stand type ) class V, class VI

Adjustable ratio:50:1

Actuator type :

Pneumatic actuator:Pneumatic diaphragm actuator or pneumatic piston actuator

Air supply: 3-7bar

Failure position :Normally closed ,Normally open

ZJHN type pneumatic double seated control valve adopts double guide structure, compact valve body structure, S streamlined fluid channel, small pressure drop loss, large flow volume, wide adjustable range and high flow characteristic accuracy. Due to the guidance on the top and bottom of the valve plug, it has the characteristics of shock resistance and wear resistance. The control valve is equipped with a multi-spring type membrane actuator, which has a small structure and a large output force. It is more suitable for the process conditions that require good stability, high reliability, high pressure, high pressure difference, and the fluid medium contains slurry and is easy to block and good control.