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 5925-01-378-8171
NSN 6105-01-378-6604
NSN 5930-00-498-4895
NSN 5990-00-254-4825
NSN 6645-01-023-8020
NSN 6620-01-246-7133
NSN 6610-01-348-0545
NSN 6110-01-065-7011
NSN 6105-00-222-2516
NSN 5920-01-037-1505
NSN 6150-01-174-4847
NSN 6105-00-434-2223