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 6645-01-607-7931
NSN 6150-00-516-8445
NSN 6610-00-331-3460
NSN 5905-00-174-3732
NSN 5920-01-010-2920
NSN 6620-01-367-2597
NSN 5945-00-080-4428
NSN 6110-01-128-3050
NSN 6150-01-412-1123
NSN 2925-01-018-1348
NSN 5855-01-398-9548
NSN 5925-01-319-6738