Straight Stroke Single Seat Control Valves
This pneumatic straight stroke single-seat control valve is a globe-style regulating valve. It is equipped with a piston actuator and handwheel for manual override. With heat dissipation structure, it is suitable for high-temperature steam and hot oil. It features tight shut-off, simple flow path, high control accuracy, widely used for pressure, temperature and flow regulation in chemical, power and heating systems.
Manufacturing Range
Size: DN20~DN300; Pressure rating: PN16~PN100, Class150~Class600.
Body material: WCB, CF8, CF8M.
Trim: Stainless steel, hardfacing Stellite.
Form: Fail-open / Fail-close.
Optional accessories: Positioner, air filter regulator, limit switch.
Design Features
Single-seat structure, excellent shut-off performance, low leakage.
Piston actuator, large output thrust, stable operation.
Integral handwheel, can manually operate when air supply fails.
Extended heat dissipation bonnet, for high temperature medium up to 450℃.
Linear / equal percentage flow characteristic optional.
Simple internal structure, convenient maintenance.
Design Standards
Design & manufacture: IEC 60534, GB/T 17213
Flange: ASME B16.5, HG/T20592
Inspection & test: API 598, GB/T13927
Fire safety: Compliant with API 607 (optional)