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 5895-01-510-9431
NSN 5910-00-248-4914
NSN 5935-00-028-4139
NSN 6610-01-491-0869
NSN 6150-01-064-5938
NSN 6650-01-553-2805
NSN 6220-01-371-6768
NSN 6610-01-541-7422
NSN 5855-01-406-7237
NSN 6620-00-221-7608
NSN 6645-01-442-6476
NSN 5985-00-081-1885