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 4140-01-573-7272
NSN 5945-01-331-5743
NSN 6320-01-578-6006
NSN 5905-00-914-5992
NSN 6645-01-212-9474
NSN 5920-01-194-7794
NSN 5999-01-424-1707
NSN 6645-01-441-0937
NSN 6110-00-627-7872
NSN 6610-00-633-4338
NSN 6150-00-228-8686
NSN 5855-01-246-4274