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 5910-00-419-3975
NSN 4140-01-449-8301
NSN 5920-01-615-0546
NSN 5915-01-627-5915
NSN 5835-00-987-9341
NSN 5990-01-612-5323
NSN 6685-01-626-3232
NSN 6105-00-983-5925
NSN 6685-01-601-3762
NSN 5855-01-147-6024
NSN 6130-00-455-8371
NSN 6685-00-306-1405