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 5975-00-159-0969
NSN 4140-01-205-3768
NSN 6145-00-275-4046
NSN 5999-00-409-5631
NSN 6685-01-137-7985
NSN 5945-01-384-7893
NSN 5910-01-571-5101
NSN 5990-01-633-9503
NSN 5965-01-186-2051
NSN 6110-01-130-2975
NSN 5999-01-480-3705
NSN 6105-00-445-1090