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 6150-00-248-9018
NSN 2925-01-525-6495
NSN 5996-00-821-5131
NSN 5935-00-441-7854
NSN 7035-01-391-7470
NSN 5930-01-282-8244
NSN 5920-01-367-5371
NSN 6620-01-059-0876
NSN 5985-00-038-3458
NSN 6240-00-052-8001
NSN 6130-00-123-6906
NSN 6620-00-450-6990