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 6620-01-100-0431
NSN 5910-01-511-0224
NSN 5985-00-549-9660
NSN 6150-00-058-8669
NSN 5960-01-317-3800
NSN 6240-01-431-5790
NSN 5915-01-309-6006
NSN 6650-01-607-7600
NSN 7035-00-763-6180
NSN 5915-01-386-4402
NSN 5835-01-100-3265
NSN 4140-00-544-6873