DVDual-line distributor is of integral structure with high rated working pressure and three rated displacement options. The distributor outlet can be equipped with a mechanical adjustment indicator rod. The displacement of the oil outlet can be adjusted by adjusting the screw position, and the distributor can be judged whether the distributor works normally by visual observation of the action of the indicator rod.The distributors DDV are used for dual-line central lu- brication systems for grease and for oil. Their function is to meter the lubricant and to press it through the lines to the lubrication points independently of back pressure.