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 5990-00-004-4158
NSN 5975-00-156-0416
NSN 5950-00-848-2141
NSN 5935-00-430-7101
NSN 5925-01-655-7653
NSN 5930-00-978-6907
NSN 6320-01-491-0327
NSN 6220-01-227-1917
NSN 6150-01-007-0749
NSN 6610-00-481-7136
NSN 6610-00-597-3095
NSN 5975-01-167-8598