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 7035-00-205-1932
NSN 5920-01-659-4972
NSN 2925-01-338-5157
NSN 6150-01-609-2996
NSN 5925-00-519-3657
NSN 5965-01-368-2966
NSN 6105-01-074-4360
NSN 6220-00-165-7095
NSN 5835-00-665-3395
NSN 6145-01-352-4913
NSN 6110-01-278-8325
NSN 6610-01-254-3647