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 7035-01-227-2546
NSN 5935-00-186-2792
NSN 5945-01-182-3307
NSN 6135-01-421-1052
NSN 6240-01-388-6795
NSN 6220-00-076-0428
NSN 5920-01-046-1062
NSN 5950-01-427-3723
NSN 6130-00-288-1283
NSN 6105-01-458-5540
NSN 6685-01-641-8114
NSN 5895-01-566-2045