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 5998-00-091-1474
NSN 6110-01-359-1751
NSN 6130-01-602-4034
NSN 5930-00-283-0962
NSN 5998-00-722-7683
NSN 5990-01-014-1280
NSN 5855-01-169-9228
NSN 5935-01-479-4393
NSN 6105-00-171-6521
NSN 6145-00-946-2033
NSN 6650-00-948-3647
NSN 5920-01-390-8273