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 5990-01-368-2604
NSN 5855-00-058-1293
NSN 6135-01-070-3865
NSN 5935-01-550-6331
NSN 5950-01-340-9151
NSN 6105-01-398-7495
NSN 6645-01-047-3026
NSN 6650-01-360-6577
NSN 6610-01-215-4857
NSN 6110-01-416-3665
NSN 6135-01-506-0759
NSN 5895-01-401-5388