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 5990-00-591-3793
NSN 6685-01-526-3457
NSN 5935-01-634-0668
NSN 5999-01-345-5601
NSN 6150-01-116-2406
NSN 6135-00-856-1343
NSN 6320-01-072-2073
NSN 6135-01-383-0151
NSN 6220-01-202-8907
NSN 6220-01-225-7830
NSN 6240-01-484-9576
NSN 4140-01-481-3587