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 6650-00-005-8572
NSN 5855-00-797-8217
NSN 5990-00-764-3773
NSN 5930-01-184-3898
NSN 4140-01-232-1026
NSN 4140-00-152-7092
NSN 6240-01-412-0715
NSN 6685-00-204-6037
NSN 5999-01-044-6250
NSN 6620-01-327-3011
NSN 5930-00-011-9982
NSN 5945-01-052-4483