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 5895-01-044-0525
NSN 5835-01-641-0073
NSN 6105-01-495-6801
NSN 5996-01-377-8219
NSN 6150-01-025-1467
NSN 6110-01-459-5480
NSN 6610-01-415-8008
NSN 2925-00-319-1805
NSN 6685-01-560-6222
NSN 5930-01-007-5066
NSN 4140-01-101-4454
NSN 6130-01-642-0827