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 6620-00-337-5610
NSN 6645-01-071-0727
NSN 5920-01-165-8480
NSN 5855-00-138-2386
NSN 6135-01-579-3534
NSN 5915-01-468-7714
NSN 5999-01-158-2897
NSN 5895-00-295-3735
NSN 6240-00-931-9654
NSN 6620-00-351-9949
NSN 4140-01-580-8573
NSN 2925-01-085-0691