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 5895-01-094-7255
NSN 5990-01-602-6701
NSN 6130-01-521-8466
NSN 5920-00-676-9113
NSN 5996-00-900-4001
NSN 6130-00-692-2916
NSN 6145-00-533-9668
NSN 6320-00-731-6134
NSN 6620-01-457-9476
NSN 5910-01-320-3950
NSN 6620-01-571-0900
NSN 5985-00-235-8899