A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 6620-00-555-3992
NSN 6220-01-436-3850
NSN 5965-01-532-9530
NSN 5910-01-462-1205
NSN 5996-00-402-6071
NSN 5999-01-555-2971
NSN 5895-00-721-4032
NSN 4140-01-648-3652
NSN 5996-00-122-6578
NSN 6610-01-089-2487
NSN 6145-01-546-1017
NSN 6130-01-265-8696