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 4140-00-891-1516
NSN 6130-00-959-8671
NSN 5999-00-892-3872
NSN 5996-01-534-4963
NSN 6240-01-583-2061
NSN 5895-01-661-3824
NSN 6610-01-591-4374
NSN 7035-01-615-6304
NSN 5975-01-388-7431
NSN 5975-01-455-2789
NSN 5996-01-217-1407
NSN 5920-01-085-0976