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 5905-01-612-8217
NSN 6320-01-377-5701
NSN 6320-01-422-1212
NSN 6220-01-202-7954
NSN 5965-00-757-3403
NSN 5965-00-624-4134
NSN 5930-01-013-1223
NSN 5930-01-167-8532
NSN 5965-01-627-7392
NSN 5960-01-513-3230
NSN 5835-01-524-2742
NSN 5990-01-176-2724