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 5985-01-281-2105
NSN 5925-01-048-0562
NSN 6320-01-246-4390
NSN 5960-00-034-7925
NSN 6135-01-400-2947
NSN 6110-01-529-6715
NSN 5999-00-279-2020
NSN 6320-01-343-8191
NSN 5965-01-250-3214
NSN 5910-01-593-9114
NSN 6610-01-024-1459
NSN 5930-01-065-0890