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 5920-00-303-5290
NSN 6150-01-286-2737
NSN 5990-00-754-8135
NSN 6145-01-430-2784
NSN 5998-01-178-8333
NSN 5965-00-913-9545
NSN 6150-00-320-6212
NSN 5945-01-552-8160
NSN 6135-00-919-1117
NSN 6685-00-806-4693
NSN 6145-01-110-9836
NSN 4140-00-501-7833