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 5910-00-678-1597
NSN 5990-01-443-2931
NSN 5999-01-331-7536
NSN 6620-00-827-1611
NSN 5905-01-200-9314
NSN 5945-00-455-9801
NSN 6620-01-419-8014
NSN 5950-01-529-7715
NSN 6650-01-499-1784
NSN 6650-00-941-2585
NSN 5996-01-156-9688
NSN 6620-00-613-3023