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 6685-01-327-8419
NSN 6135-01-558-7257
NSN 6320-00-070-4544
NSN 5905-01-578-6517
NSN 5910-01-292-7494
NSN 5895-01-355-2871
NSN 5925-01-445-4658
NSN 6150-01-496-4529
NSN 5935-01-248-0475
NSN 6220-01-105-9892
NSN 6110-01-193-1803
NSN 6130-00-227-2124