ZJHN type Pneumatic diaphragm double-seat regulating 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
Pneumatic diaphragm double-seat regulating 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 diaphragm double-seat regulating 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
Pneumatic diaphragm double-seat regulating valve structure
Application Areas
As a core component of fluid control systems, valves are widely used in key industrial sectors such as oil refining, petrochemicals, power generation, steel, chemicals, and pharmaceuticals, thanks to their precise on/off regulation, pressure control, and media diversion capabilities. In core aspects of media transportation, process control, and safety protection across various industries, valves can adapt to complex conditions such as high temperature, high pressure, and strong corrosion, while also meeting stringent requirements for clean production and precise flow control. They are indispensable basic components ensuring stable operation and safe production in various industrial settings.
FAQ
Q: Are you a factory or a trading company?
A: We are an integrated manufacturer and trader specializing in valves, with core products covering various control valves and related supporting valve products. We not only have our own production base equipped with professional production equipment and production lines, possessing complete production capabilities from raw material processing and component manufacturing to finished product assembly, allowing us to directly control the quality and efficiency of the entire valve production process; we also conduct related trading business, providing one-stop service to meet customers' product procurement and supply needs. We are not merely a pure trading company engaged in resale transactions.
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