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 5930-00-554-1064
NSN 5945-01-579-5442
NSN 6130-00-512-8692
NSN 5905-01-433-3524
NSN 6645-01-426-8621
NSN 5920-00-752-3081
NSN 6220-00-935-6881
NSN 5895-01-595-5402
NSN 5990-01-503-0194
NSN 6150-00-939-4731
NSN 5895-01-550-0479
NSN 5905-01-571-8206