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 5960-01-539-1956
NSN 5895-00-964-8989
NSN 5996-01-073-9742
NSN 6650-01-068-3186
NSN 6240-01-052-2488
NSN 5990-00-188-6111
NSN 6145-00-965-8069
NSN 5996-00-986-8853
NSN 5920-01-438-3640
NSN 6105-00-793-0142
NSN 4140-01-018-2038
NSN 6685-00-082-1939