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 5915-01-491-1852
NSN 5985-00-009-0977
NSN 5895-01-350-3527
NSN 5990-01-646-2990
NSN 4140-01-564-2258
NSN 7035-01-423-8343
NSN 6105-00-113-0679
NSN 4140-01-440-5856
NSN 5905-00-194-9338
NSN 6130-01-183-7667
NSN 6135-01-100-3593
NSN 6145-01-356-6684