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 5905-01-425-2015
NSN 5920-01-535-0796
NSN 4140-01-415-3363
NSN 6145-00-269-4271
NSN 6105-01-650-6505
NSN 6105-01-182-9604
NSN 6240-01-050-0834
NSN 6145-01-136-5805
NSN 5998-01-514-7342
NSN 6135-01-525-6979
NSN 6610-01-365-7796
NSN 5975-01-604-8601