Triple Eccentric Pneumatic Wafer Butterfly Valve

NSV Triple Eccentric Pneumatic Wafer Butterfly Valve

The NSV triple eccentric pneumatic wafer butterfly valve features a metal-seated, three-offset design that eliminates seal friction during operation, ensuring reliable shut-off and long service life in severe service. Rated up to ANSI Class 600, it is engineered for high-pressure, high-temperature applications such as superheated steam, thermal oil, and refinery flue gas systems.

Key Features

Body material: WCB / CF8M
Nominal size: 3"–24" (DN80–DN600)
Pressure rating: ANSI Class 150 / 300 / 600
Operating temperature: -29°C to +429°C
Valve type: Triple eccentric, wafer-style
Sealing: Metal seat (316+Stellite overlay)
End connection: Wafer per API 609
Actuator: Pneumatic (double/spring-return; manual override optional)
Standards: API 609, MSS SP-68, ISO 10631
Fire-safe: API 607 / ISO 10497 compliant (optional)

Typical Applications
Ideal for superheated steam isolation, FCC flue gas cut-off, thermal oil systems, and high-pressure hot water lines.

FAQ

1. Q:Do you have customized valve?

A:Yes,we can supply customized valves.

2. Q: What kinds of valves do you manufacture?

A: We usually manufacture valves made of various materials such as cast Iron/ carbon steel,stainless steel,Alloy steel and industrial valves such as ball, gate, globe, check, bellows seal and ETC. For detail information, please refer to " Download>E-Catalog” of homepage.

3. Q:What’s the packing for shipping?

A:Its carton for small valves(sample) and plywood case(don’t to fumigate).

4.Q: Do u provide sample,is it free or extra ?

A: Yes, we could offer the sample, due to its value,we can supply free sample that small value and you afford the freight,but also welcome visit our factory to inspect quality.