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 6135-00-889-1485
NSN 5950-00-224-1457
NSN 5985-01-359-2605
NSN 6220-01-413-9373
NSN 6135-01-059-4055
NSN 5950-01-467-2426
NSN 6240-01-269-3146
NSN 5999-01-395-9853
NSN 5895-01-104-4410
NSN 6135-01-350-2932
NSN 5960-01-489-1510
NSN 5950-01-513-0136