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 6620-00-186-8220
NSN 5905-01-270-1697
NSN 5910-00-200-1413
NSN 5905-01-423-9970
NSN 7035-00-093-5840
NSN 5935-01-395-1776
NSN 6145-01-423-8625
NSN 6130-01-549-3441
NSN 6240-01-432-0819
NSN 4140-01-070-4928
NSN 6220-00-175-7849
NSN 5915-00-777-4296