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 6620-01-461-0899
NSN 6320-01-302-5157
NSN 6610-01-485-8973
NSN 5998-01-555-8808
NSN 6135-01-492-5717
NSN 2925-00-612-7420
NSN 5990-00-868-3413
NSN 5930-01-563-9098
NSN 5935-01-607-0220
NSN 5985-00-410-3485
NSN 5905-00-273-9789
NSN 5965-00-188-5531