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 6150-01-409-2858
NSN 6645-01-290-3930
NSN 6110-01-066-8038
NSN 5945-00-831-0382
NSN 6650-00-695-0304
NSN 5960-01-039-0093
NSN 5975-00-023-1937
NSN 5925-00-127-5806
NSN 5945-00-534-4720
NSN 5920-00-189-0858
NSN 6145-01-037-9291
NSN 6105-01-050-3799