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 5855-01-375-1191
NSN 5999-01-054-3949
NSN 6220-00-181-4643
NSN 5915-01-175-5085
NSN 6620-01-643-5531
NSN 7035-01-276-9016
NSN 5999-01-465-1373
NSN 6110-01-597-6550
NSN 6135-01-110-9470
NSN 5998-01-462-5017
NSN 6650-00-266-6808
NSN 5998-01-127-8038