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 7035-01-227-2546
NSN 5920-01-092-6839
NSN 6150-01-020-8983
NSN 5950-00-934-8866
NSN 6220-00-172-0146
NSN 5930-00-557-0727
NSN 5935-01-267-9944
NSN 5855-01-640-9838
NSN 5915-00-553-8755
NSN 5930-00-323-1484
NSN 6645-00-066-6868
NSN 5985-01-592-3860