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 2925-01-596-9448
NSN 7035-01-502-6764
NSN 5855-00-918-1622
NSN 5999-01-504-1579
NSN 6650-01-373-5912
NSN 5990-01-386-5561
NSN 6320-01-233-5798
NSN 6320-01-352-5653
NSN 5965-01-619-9592
NSN 4140-01-067-0533
NSN 5915-01-190-0852
NSN 5999-00-431-9230