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 5990-01-345-1468
NSN 5985-01-578-5701
NSN 2925-00-147-3801
NSN 5935-00-035-4559
NSN 6220-01-444-0945
NSN 4140-01-268-7106
NSN 5935-01-065-1850
NSN 6610-01-136-7836
NSN 5855-01-477-5332
NSN 5990-00-359-9839
NSN 6130-01-431-5796
NSN 5960-01-599-9821