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 5950-01-538-9073
NSN 5915-01-633-9845
NSN 5945-01-293-4620
NSN 4140-00-535-6499
NSN 6145-01-157-3488
NSN 6620-01-517-0014
NSN 6645-00-787-0651
NSN 6150-00-336-9057
NSN 6610-01-541-5034
NSN 5945-01-657-2526
NSN 5930-00-636-8888
NSN 5855-00-466-2309