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 5985-01-186-8404
NSN 6685-01-546-0804
NSN 6150-00-922-4243
NSN 4140-00-865-5248
NSN 4140-01-235-6041
NSN 6650-01-367-7593
NSN 5950-01-208-5844
NSN 6320-01-331-6947
NSN 6110-01-094-3907
NSN 5905-00-664-4218
NSN 5920-00-518-1789
NSN 7035-00-320-5644