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 6145-01-651-5208
NSN 6645-01-400-1137
NSN 5855-01-647-5398
NSN 5975-01-388-1415
NSN 5999-01-118-8934
NSN 2925-01-149-0353
NSN 6620-01-218-6203
NSN 6240-00-683-0725
NSN 6220-01-157-0030
NSN 5935-01-173-1220
NSN 5855-01-258-5161
NSN 5925-00-520-8063