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 5990-01-377-8991
NSN 5930-00-262-6057
NSN 5990-01-542-4212
NSN 6135-00-985-7887
NSN 5999-01-115-3342
NSN 5935-00-009-3981
NSN 5935-01-543-0289
NSN 5975-00-971-8863
NSN 6220-01-629-2636
NSN 5930-01-543-3926
NSN 4140-00-246-4969
NSN 5945-01-512-1066