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 5996-01-107-5737
NSN 5996-01-153-2359
NSN 5905-01-630-8255
NSN 6110-01-124-1546
NSN 5835-00-532-5910
NSN 6240-01-550-3112
NSN 5960-00-227-0243
NSN 5975-00-727-3678
NSN 6145-01-360-7070
NSN 6320-00-823-2015
NSN 6620-00-965-9841
NSN 5975-00-312-1410