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 5998-01-462-2087
NSN 5998-00-100-0491
NSN 5998-00-905-1482
NSN 5935-00-982-3492
NSN 6650-01-508-3651
NSN 6240-01-317-7078
NSN 5925-01-411-7839
NSN 5835-01-185-1102
NSN 5998-01-078-2870
NSN 5920-01-252-4406
NSN 5895-01-072-5583
NSN 6135-01-014-9755