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 5975-01-279-6731
NSN 6650-01-519-9165
NSN 6645-01-091-0009
NSN 6320-01-278-9832
NSN 5975-01-179-6749
NSN 7035-01-445-3563
NSN 7035-01-442-7947
NSN 5960-01-409-1917
NSN 5965-01-024-1012
NSN 6105-00-516-0474
NSN 5990-01-529-6347
NSN 6150-01-400-1297