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 6105-00-586-7726
NSN 7035-01-169-6551
NSN 6620-01-330-2658
NSN 6610-01-200-6861
NSN 6220-01-413-3030
NSN 5960-01-526-3843
NSN 5999-01-510-7204
NSN 7035-01-057-6325
NSN 5999-01-465-5939
NSN 6130-00-780-8094
NSN 6620-00-761-2540
NSN 2925-01-206-7948