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 5930-01-526-0260
NSN 6610-00-628-2177
NSN 5945-01-492-6697
NSN 5985-01-648-4011
NSN 6645-01-461-7704
NSN 7035-00-206-6123
NSN 6610-01-170-7107
NSN 5985-01-472-2458
NSN 5998-00-880-6702
NSN 6145-01-427-9844
NSN 6240-00-991-6929
NSN 2925-01-487-0886