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 6610-00-170-6715
NSN 6650-01-459-7155
NSN 6130-01-059-4751
NSN 2925-01-492-5342
NSN 7035-01-062-0184
NSN 2925-00-159-9003
NSN 6105-01-438-1721
NSN 4140-01-578-6088
NSN 5990-00-241-1301
NSN 5950-01-186-5562
NSN 6130-01-634-0603
NSN 5920-01-064-9114