Valve size 4.000 in.
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 6105-01-478-0548
NSN 6130-01-269-5938
NSN 6110-01-462-6013
NSN 2925-00-604-7487
NSN 5999-00-872-8847
NSN 6645-01-579-2898
NSN 4140-01-626-6779
NSN 5999-01-105-6217
NSN 5855-00-357-1158
NSN 5920-01-249-4544
NSN 6110-00-155-4303
NSN 5915-01-142-2018