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 6320-00-925-0558
NSN 5905-01-502-9608
NSN 5985-01-370-4978
NSN 5998-01-462-2625
NSN 6130-01-447-3164
NSN 6110-01-316-2257
NSN 5915-00-336-1644
NSN 4140-00-541-9077
NSN 6150-01-360-0509
NSN 5990-01-322-9781
NSN 6145-01-603-7289
NSN 6620-00-379-2856