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 6685-01-222-5556
NSN 5905-00-153-5693
NSN 5996-01-544-9731
NSN 5925-00-471-1949
NSN 5945-00-648-0552
NSN 5998-01-359-0509
NSN 6650-00-678-5627
NSN 6685-01-094-6455
NSN 6135-00-643-4843
NSN 5990-01-632-0969
NSN 5915-00-057-8787
NSN 7035-00-946-2642