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 5996-01-461-8897
NSN 5975-00-386-5006
NSN 6135-01-521-0378
NSN 5996-00-292-5394
NSN 6240-01-180-3720
NSN 5945-01-421-4135
NSN 5945-01-634-0588
NSN 6620-00-375-0393
NSN 6320-01-406-6098
NSN 6220-01-359-7820
NSN 4140-01-468-2975
NSN 5998-00-373-2560