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 5935-00-887-1818
NSN 5835-01-123-8305
NSN 6620-01-420-1735
NSN 5905-01-170-4831
NSN 5930-00-901-2998
NSN 6135-00-295-2614
NSN 7035-01-531-4750
NSN 5905-00-686-4555
NSN 6220-01-381-1074
NSN 6620-00-496-8697
NSN 6145-00-170-6872
NSN 5895-00-791-1343