Use on a 4 in. Vent check valve
A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.
Classification: Parts of taps, cocks, valves and similar appliances, nesoi
NSN 5920-01-617-4311
NSN 5998-00-161-0636
NSN 6220-00-115-5842
NSN 5985-01-363-5339
NSN 5998-01-587-6025
NSN 6135-00-122-2420
NSN 7035-01-649-4434
NSN 5855-01-398-9548
NSN 6105-00-513-2697
NSN 5985-00-182-8122
NSN 6610-00-854-4980
NSN 6220-00-754-3452