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 2925-01-501-1104
NSN 6105-01-578-6551
NSN 6145-01-305-6259
NSN 5950-01-113-6846
NSN 4140-01-394-6288
NSN 5905-01-352-5824
NSN 6135-00-927-5848
NSN 4140-01-580-6652
NSN 5960-00-078-9500
NSN 5920-00-308-0778
NSN 6145-01-651-7291
NSN 6110-01-129-2520