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 6320-01-523-4954
NSN 5930-00-248-5053
NSN 6685-01-398-5906
NSN 6105-01-431-8998
NSN 5965-01-536-1253
NSN 5915-00-044-5763
NSN 6650-01-633-9147
NSN 5895-01-408-0059
NSN 5905-00-800-0698
NSN 6110-01-145-3814
NSN 5925-00-971-5633
NSN 6620-00-935-1321