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 6320-01-240-4637
NSN 6685-01-450-5493
NSN 5930-01-441-2329
NSN 5960-01-381-2478
NSN 6145-01-196-8079
NSN 5998-01-084-2471
NSN 6220-01-242-9901
NSN 5960-00-998-4324
NSN 6320-00-322-3460
NSN 5855-01-448-6138
NSN 6150-01-555-7646
NSN 5999-01-124-8563