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 5925-01-132-9120
NSN 5935-01-186-9337
NSN 6135-01-510-9986
NSN 6145-01-475-9052
NSN 5960-01-039-7840
NSN 6150-01-493-4181
NSN 5950-01-115-9617
NSN 5975-01-364-9767
NSN 5935-01-024-1979
NSN 5985-01-634-0635
NSN 5835-01-497-5029
NSN 5905-01-420-3921