904L Triple Eccentric Wafer Butterfly Valve

NSV 904L Triple Eccentric Wafer Butterfly Valve

The NSV 904L cast steel triple eccentric butterfly valve features an ASTM A995 Gr. 904L body and a PTFE seat in a wafer configuration. The triple eccentric design eliminates disc to seat friction during operation, enabling bubble tight shut off, low torque, and extended service life even in corrosive or high-cycle applications. Combined with the excellent chemical resistance of PTFE and the superior corrosion performance of 904L super austenitic stainless steel, the valve is well suited for demanding services in chemical, pharmaceutical, and marine industries.

Key Features

Body material: ASTM A995 Gr. 904L 

Nominal size: 2"-24" (DN50-DN600)

Pressure rating: ANSI Class 150 / PN16

Operating temperature: -29°C to +200°C

Valve type: Triple eccentric wafer butterfly valve

Sealing: PTFE seat with metal backup (bubble-tight, Class VI per ANSI/FCI 70-2)

End connection: Wafer (for ANSI B16.5 flanges)

Operation: Manual lever, gear operator, or actuated (pneumatic/electric)

Standards: API 609, MSS SP-68, ISO 5211, ANSI/FCI 70-2 Class VI, PED 2014/68/EU

Media: Sulfuric acid, phosphoric acid, acetic acid, caustics, solvents, seawater, pulp slurries

Typical Applications

Critical isolation in chemical reactors, pharmaceutical CIP/SIP systems, seawater handling, and wastewater treatment requiring zero leakage and long cycle life.

FAQ

1. Q:Do you have customized valve?

A:Yes,we can supply customized valves.

2. Q:How can I get your company catalog?

A: For your reference, basic catalogue is same as "Download>E-Catalog” of homepage. If you need printed material or request more specific data like PQ material, please contact sales team.

3. Q:Does your company have any agent/distributor with the exception of China?

A: At present,we have agent in Indonesia,Singapore,Canada,Mexico,Iraq,and welcome contact us if you would like to join us.