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 5915-00-518-0851
NSN 5910-01-346-9559
NSN 6645-01-519-3007
NSN 6130-01-243-0983
NSN 6620-01-538-1415
NSN 4140-01-350-4475
NSN 5945-01-040-3087
NSN 5905-01-025-1329
NSN 6150-01-633-6567
NSN 6145-01-501-6548
NSN 5990-01-442-3520
NSN 6135-00-377-9165