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 5960-01-411-5899
NSN 6110-01-589-1812
NSN 5945-00-718-4929
NSN 5999-01-555-8141
NSN 5999-01-452-7893
NSN 7035-01-441-4174
NSN 6650-00-791-1637
NSN 5915-00-995-2559
NSN 5960-00-952-3011
NSN 6320-00-483-0451
NSN 5975-01-105-9020
NSN 5895-01-125-0278