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 5960-01-318-0987
NSN 6320-01-267-5117
NSN 5985-01-152-1191
NSN 5960-01-632-6576
NSN 5910-00-030-6548
NSN 5998-00-807-4486
NSN 6320-00-646-3311
NSN 5905-00-987-3591
NSN 5960-01-437-7422
NSN 5999-01-409-1969
NSN 4140-01-018-2038
NSN 6130-01-555-3364