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 6135-01-174-4863
NSN 5835-01-616-6131
NSN 5855-00-179-8588
NSN 6110-01-529-3946
NSN 6240-01-052-0485
NSN 5925-01-390-8822
NSN 6645-01-646-2953
NSN 6610-01-629-4140
NSN 5910-01-067-9104
NSN 6240-00-779-3394
NSN 5950-00-408-4785
NSN 5985-00-781-4286