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 2925-01-041-8201
NSN 5965-00-803-6089
NSN 5930-00-717-1655
NSN 5999-01-106-4938
NSN 5998-00-721-4701
NSN 5998-01-152-2819
NSN 5895-00-858-2855
NSN 5930-01-074-6981
NSN 5935-01-474-1949
NSN 5950-01-417-3019
NSN 6645-01-300-5054
NSN 6610-01-494-9853