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 5855-00-327-2112
NSN 2925-00-839-6815
NSN 5930-01-104-9116
NSN 5935-00-318-3253
NSN 5915-01-181-9018
NSN 6135-01-210-8715
NSN 5965-01-437-9721
NSN 7035-01-596-8633
NSN 6610-00-777-2591
NSN 6150-01-628-7092
NSN 6620-01-435-7083
NSN 6240-01-585-4516