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 6150-00-253-1813
NSN 5998-01-188-0279
NSN 5990-01-628-8188
NSN 5985-00-987-3441
NSN 6650-01-601-8194
NSN 6110-01-139-4646
NSN 6110-00-420-1357
NSN 5910-00-173-4215
NSN 5905-00-067-6062
NSN 4140-00-495-2848
NSN 6240-00-740-8901
NSN 7035-01-461-1066