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 5990-00-277-3763
NSN 5960-01-505-2426
NSN 6320-00-405-2348
NSN 5910-01-458-5069
NSN 5950-01-020-7717
NSN 2925-00-449-2478
NSN 5965-00-964-1756
NSN 5910-00-140-9537
NSN 5935-01-028-0524
NSN 6620-01-262-7317
NSN 2925-01-264-5256
NSN 5999-01-658-6466