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 7035-01-577-0003
NSN 6645-01-114-6802
NSN 6240-01-031-5505
NSN 5998-01-254-7815
NSN 6145-01-212-2036
NSN 6650-01-029-5414
NSN 5945-01-566-7355
NSN 6620-00-679-5830
NSN 5945-00-081-1338
NSN 6145-01-523-3127
NSN 5998-01-400-0938
NSN 6220-01-127-7173