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 5895-01-519-8639
NSN 5998-01-331-0689
NSN 6130-01-406-3725
NSN 5996-01-287-8311
NSN 6110-01-593-6468
NSN 6320-00-731-6134
NSN 6650-01-512-1316
NSN 6130-01-476-2835
NSN 6240-01-323-6512
NSN 6220-00-397-6910
NSN 5855-00-165-3093
NSN 6110-00-959-3386