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 6610-01-594-9614
NSN 6620-00-727-8043
NSN 5920-01-579-2153
NSN 5935-01-455-6798
NSN 5915-01-448-2073
NSN 4140-00-856-6950
NSN 6240-01-126-9167
NSN 5950-00-542-7581
NSN 6150-01-552-1814
NSN 6320-00-225-7013
NSN 5965-00-716-7078
NSN 5910-01-133-6923