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 5975-01-440-1323
NSN 5999-01-361-8725
NSN 5915-01-025-1362
NSN 6650-01-325-3747
NSN 5945-00-152-9562
NSN 4140-01-008-5934
NSN 6135-00-643-4843
NSN 5945-00-284-2006
NSN 5895-01-141-6031
NSN 5996-00-340-5634
NSN 5910-01-645-7757
NSN 5930-01-054-8939