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 5999-01-068-3639
NSN 6240-01-452-3961
NSN 5990-00-518-0684
NSN 6135-00-416-2898
NSN 6620-00-863-4639
NSN 6240-01-398-0646
NSN 5895-01-525-9135
NSN 5855-00-149-0766
NSN 5920-00-199-9498
NSN 5985-01-217-7849
NSN 5910-01-074-6863
NSN 5905-01-138-6282