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 6650-01-077-3027
NSN 5920-01-647-0812
NSN 4140-01-435-1813
NSN 6130-01-028-7040
NSN 5920-01-576-3663
NSN 5985-01-566-9577
NSN 5975-01-203-2163
NSN 5960-00-140-9583
NSN 2925-01-014-8007
NSN 4140-00-846-4786
NSN 5985-01-475-8361
NSN 2925-01-320-6512