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 6220-00-739-1799
NSN 6320-01-170-4068
NSN 6110-00-211-7435
NSN 5930-01-282-7362
NSN 5925-01-031-7381
NSN 6320-00-313-9114
NSN 5895-01-376-5262
NSN 5920-01-363-7063
NSN 5985-00-319-7565
NSN 6645-01-462-2101
NSN 6130-01-631-3341
NSN 5975-00-203-8416