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 2925-01-027-1293
NSN 5950-01-315-0298
NSN 5990-01-591-8797
NSN 6130-00-525-3246
NSN 6240-01-418-2606
NSN 5895-01-335-6069
NSN 6650-01-418-0790
NSN 5950-01-503-7623
NSN 5996-01-383-1478
NSN 5975-01-083-7279
NSN 5920-00-156-4482
NSN 6645-00-527-7128