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 5950-00-083-8993
NSN 5950-01-195-1967
NSN 5925-00-432-0546
NSN 4140-01-136-5530
NSN 4140-01-353-2205
NSN 5999-01-421-1811
NSN 5999-01-132-1669
NSN 6150-00-398-0833
NSN 6150-01-245-8170
NSN 5910-00-014-0978
NSN 6145-01-375-5244
NSN 5930-01-322-9492