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 5930-01-278-6511
NSN 5855-01-147-4785
NSN 5895-01-425-7085
NSN 6240-01-426-5581
NSN 5985-00-831-8527
NSN 6220-01-141-8200
NSN 6320-00-831-2227
NSN 6135-00-196-5267
NSN 5925-01-371-6196
NSN 4140-01-502-6259
NSN 6320-01-506-9439
NSN 6320-01-125-3361