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 6135-01-502-5787
NSN 5998-01-608-5300
NSN 6150-00-928-0790
NSN 5930-01-216-8715
NSN 6645-00-936-9111
NSN 5905-01-425-1366
NSN 5905-01-211-6643
NSN 7035-01-607-3953
NSN 5965-01-247-5696
NSN 5975-00-419-3256
NSN 5915-01-422-9979
NSN 5925-01-466-5073