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 6610-01-452-5180
NSN 5990-00-900-4459
NSN 6645-01-467-9983
NSN 6685-00-164-7014
NSN 6130-00-956-8267
NSN 2925-01-019-1153
NSN 5945-01-533-3332
NSN 5895-01-381-3328
NSN 5990-01-054-3332
NSN 5920-00-825-2572
NSN 5855-01-519-3814
NSN 2925-01-324-3533