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 5985-01-140-9829
NSN 6620-00-266-2763
NSN 5975-00-452-1197
NSN 6650-00-434-0188
NSN 5920-00-905-1831
NSN 6105-00-244-1729
NSN 6650-01-555-7384
NSN 2925-01-554-3650
NSN 6130-01-168-8001
NSN 5945-00-832-9592
NSN 5920-01-421-0291
NSN 5975-01-023-1977