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 6130-00-352-2317
NSN 6135-00-203-9645
NSN 6240-01-464-4571
NSN 5905-01-596-0424
NSN 6650-01-044-6179
NSN 5985-01-569-0637
NSN 6620-00-916-3134
NSN 5920-00-620-4780
NSN 5920-00-484-0377
NSN 6105-00-665-8581
NSN 5910-01-364-7413
NSN 5915-00-727-2601