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 5975-01-073-5103
NSN 6105-00-252-9017
NSN 5999-00-189-4918
NSN 5905-00-098-9131
NSN 6610-01-514-3539
NSN 6650-01-101-9023
NSN 7035-01-508-6447
NSN 5999-00-120-0206
NSN 6685-00-343-9913
NSN 5855-01-250-2421
NSN 6650-00-195-7519
NSN 5835-01-090-0784