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 6610-01-354-3087
NSN 6320-00-521-9350
NSN 6130-00-558-6112
NSN 6135-01-142-6456
NSN 6645-01-232-4843
NSN 5935-00-421-6047
NSN 6620-00-965-9841
NSN 5910-00-212-5969
NSN 6110-01-226-8139
NSN 6150-00-336-9057
NSN 6105-00-553-8943
NSN 5925-01-365-9757