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 5935-00-455-8523
NSN 5920-00-837-2633
NSN 6610-01-464-3037
NSN 6220-01-617-7535
NSN 6220-00-395-5225
NSN 5985-01-073-7135
NSN 5999-01-107-4412
NSN 6110-01-202-8896
NSN 6150-00-018-8646
NSN 6150-01-331-9176
NSN 6135-01-536-8333
NSN 6240-01-627-0968