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 5990-00-422-2093
NSN 6240-01-384-3887
NSN 5985-01-211-9834
NSN 5920-01-066-3709
NSN 5998-01-119-2235
NSN 6145-01-089-8854
NSN 5895-00-828-3994
NSN 6130-01-425-7899
NSN 5998-01-058-5710
NSN 5910-01-607-0879
NSN 6105-00-968-7525
NSN 5895-01-430-2555