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 6650-01-557-4143
NSN 5996-01-522-0654
NSN 6110-01-012-3534
NSN 5965-01-245-1552
NSN 6135-01-210-8715
NSN 5895-01-424-0311
NSN 5925-01-541-4758
NSN 4140-01-614-1641
NSN 5985-00-850-1524
NSN 5965-01-660-2341
NSN 5935-00-655-1423
NSN 5998-00-163-6769