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 4140-01-100-1223
NSN 5855-00-149-0766
NSN 5905-01-653-8149
NSN 5920-00-943-4022
NSN 5985-01-429-9066
NSN 5835-00-807-5632
NSN 6645-01-085-4214
NSN 6130-00-225-3471
NSN 2925-00-957-7329
NSN 5950-00-839-7042
NSN 2925-01-127-0167
NSN 6150-00-615-5886