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 6220-00-473-0517
NSN 5999-01-014-3798
NSN 6220-00-296-4101
NSN 7035-01-384-4383
NSN 6650-01-421-0838
NSN 5920-01-024-5956
NSN 5835-01-608-8868
NSN 5999-01-554-5905
NSN 5835-00-051-9092
NSN 5945-01-250-7972
NSN 6685-01-113-2514
NSN 5999-01-218-8164