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 2925-01-288-2091
NSN 6220-00-528-7752
NSN 5920-01-317-3506
NSN 6610-00-740-7103
NSN 5950-01-333-4926
NSN 5920-00-144-8031
NSN 5999-01-389-8252
NSN 5925-01-054-3783
NSN 5935-01-039-1559
NSN 5985-00-609-3006
NSN 6650-01-659-3104
NSN 5960-01-126-5767