Pressure Seal Check Valve
Pressure seal check Valve is designed for reliable backflow prevention with a pressure-assisted sealing mechanism. It automatically opens and closes according to the flow conditions, providing reliable sealing performance in demanding industrial applications. It is widely used in oil and gas, chemical processing, power generation, pharmaceutical, and other industries.
Specification
Size: NP 2”-24”
Class: class 900~2500 (PN160~PN420)
Working temperature: -29～500℃
Design: API 602 API6D API 1868
Connection: RF, SW, BW, RTJ
Face to face: ASME B16.10
Test：API 598
Main Parts Material
Body | WCB | WC6 | CF8 | CF3 |
Disc | WCB | WC6 | CF8 | CF3 |
Stem | F6a | 38CrMoALA | F304 | F316 |
Packing | Packing | Graphite | Graphite | Graphite |
Applicable medium: | water, steam，other non-corrosive medium | |||
Features:
- Excellent Sealing: Pressure-assisted sealing provides reliable performance at high pressures.
- Compact Design: Fewer bolts and an optimized flow passage reduce size, weight, and flow resistance.
- High Pressure & Temperature: Available in carbon steel, alloy steel, and stainless steel, for PN160~PN420 (Class 900–2500) and -29°C to 550°C.
- Fast Closing: Short disc travel enables fast closing and helps reduce water hammer.