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 5996-01-495-7451
NSN 6610-01-118-5189
NSN 6610-01-386-4582
NSN 5960-01-033-6651
NSN 6130-01-433-2215
NSN 6320-00-115-0883
NSN 6105-00-217-0993
NSN 2925-00-041-0439
NSN 6220-01-306-5377
NSN 5945-00-411-3690
NSN 6135-00-593-6831
NSN 6135-01-353-3802