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 5905-00-138-7420
NSN 6320-01-192-0332
NSN 6145-00-232-0813
NSN 5999-00-230-5083
NSN 6685-00-469-2550
NSN 6220-01-336-5053
NSN 6130-00-902-0506
NSN 5945-01-565-3162
NSN 6645-01-386-6311
NSN 5905-00-028-3518
NSN 5990-01-293-4817
NSN 2925-01-351-9748