Reductive three -way pressure proportional valves Le Dzce5, Dzce5r, Dzce7 and Dzce8 are proportional valves of reduced three -way pressure, piloted, with plate assembly. In addition to reducing the pressure from via P towards users A, they allow the return of flow from users to the unloading t in cases where there is a pressure higher than the calibration value in the downstream circuit (users A). They are also called whites valves. They can be controlled by controlled power supply in current or via an electronic card, to be ordered separately.