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 5950-00-172-6520
NSN 5925-01-327-5728
NSN 5905-01-320-5726
NSN 6105-00-174-6633
NSN 4140-01-504-8326
NSN 5975-00-834-1821
NSN 5975-00-693-5922
NSN 6685-01-032-9181
NSN 6620-01-168-8450
NSN 5835-01-116-2369
NSN 6610-01-025-2876
NSN 6650-00-425-7028