Proportional valves regulatory of compensated qde3 and QDE5 councilors are proportional ranges of flow rate with baric compensation, for plate assembly. These valves work on 2 or 3 -way, depending on how the interface in the assembly plan is made. They are used for adjusting the flow rate in hydraulic circuit branches or to regulate the speed of hydraulic actuators. control of the speed of hydraulic actuators. They are available in two sizes, in 5 flow adjustment fields, up to 80 l/min. They can be controlled with a controlled power supply in current or via an electronic card, to be ordered separately.