Pneumatic Single Seat Regulating Valve
This pneumatic single seat regulating valve adopts single plug and single seat structure. Equipped with spring diaphragm actuator and intelligent valve positioner, it converts 4-20mA electric signal into pneumatic signal to adjust medium flow, pressure and temperature. It features good sealing performance, simple structure and convenient maintenance. Widely used in petrochemical, chemical, power, pharmaceutical and water treatment industries.
Manufacturing Range
Size: DN20~DN200; Pressure class: PN16~PN100, Class150~Class600
Body material: CF8, CF8M, WCB
Trim: Plug & seat, optional Stellite hardfacing
Action type: Air to Open / Air to Close
End connection: Flanged
Design Features
Single-seat structure, excellent shut-off performance.
Simple internal structure, easy disassembly and maintenance.
Sensitive response, high regulating accuracy.
Matchable with positioner, filter regulator, limit switch.
Linear / equal percentage flow characteristic optional.
Design Standards
Design & manufacture: IEC 60534, GB/T 17213
Flange standard: HG/T20592, ASME B16.5
Inspection & test: API 598, GB/T 13927