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 5925-01-578-5081
NSN 5935-01-161-3178
NSN 5855-01-513-9601
NSN 5920-00-135-0127
NSN 5985-01-441-3432
NSN 6320-00-139-1090
NSN 6105-01-043-4226
NSN 6610-01-316-8902
NSN 5999-01-482-1601
NSN 5835-01-571-4083
NSN 5915-01-513-9122
NSN 5925-00-813-6810