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 6685-01-617-4798
NSN 6610-01-017-4789
NSN 5910-00-917-5519
NSN 6135-01-210-8715
NSN 6130-01-186-7279
NSN 5920-00-862-8734
NSN 5960-01-025-9388
NSN 5910-01-165-7044
NSN 5855-01-512-1926
NSN 5915-01-470-7795
NSN 5920-01-650-9473
NSN 5935-01-579-0506