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 4140-01-195-4272
NSN 5855-00-472-2055
NSN 5910-01-229-6533
NSN 5950-01-609-6701
NSN 6110-01-633-9660
NSN 6620-00-176-5722
NSN 5910-01-280-1618
NSN 5975-01-072-1890
NSN 6645-00-825-5677
NSN 6105-00-630-3229
NSN 5930-00-850-3919
NSN 4140-01-512-8528