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 6320-01-530-4870
NSN 6240-01-221-1378
NSN 6135-00-593-6831
NSN 5999-01-392-7840
NSN 5905-01-114-0487
NSN 5996-00-400-4433
NSN 4140-01-307-5152
NSN 5965-00-739-2063
NSN 5895-01-365-4320
NSN 6110-00-516-8645
NSN 5999-00-448-2755
NSN 6105-00-760-5348