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 7035-01-413-6697
NSN 6110-01-429-7851
NSN 6685-00-932-4258
NSN 5935-01-360-4244
NSN 6610-01-487-6843
NSN 6150-00-594-9051
NSN 6620-00-115-9050
NSN 6220-01-395-1623
NSN 5999-00-681-0587
NSN 6610-01-381-8898
NSN 6220-00-985-3465
NSN 6145-01-619-8583