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 6135-00-542-6728
NSN 5855-01-141-8227
NSN 5990-01-240-1100
NSN 5935-00-521-4774
NSN 6650-01-193-8983
NSN 6130-01-512-4054
NSN 6110-00-391-4939
NSN 5915-01-381-8805
NSN 4140-01-316-0493
NSN 6645-01-510-2802
NSN 6685-01-643-5432
NSN 2925-00-159-9003