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 6220-01-288-5235
NSN 4140-00-259-2567
NSN 6620-01-624-3933
NSN 6685-01-031-7228
NSN 5935-01-005-1757
NSN 6650-01-147-0288
NSN 6130-01-146-2591
NSN 5996-00-518-0460
NSN 5835-01-435-4139
NSN 6145-01-099-9114
NSN 5996-01-235-1643
NSN 6220-01-003-9126