The task of pressure reducing valves in a hydraulic circuit is to maintain arather constant outlet pressure despite a higher and changing inlet pressure. They are used when an hydraulic circuit with a higher pressure level(primary side) is to supply another circuit with a lower pressure level(secondary side), without affecting the higher pressure in the primarycircuit. The pressure reducing valve illustrated here is directly controlled. Thisvalve type CDK does not show any leakage when closed and therefore aleakage port is not required as is with other conventional pressure reducing valves which act like a spool valve and always do have design relatedleakage. A override compensation is not possible with type CDK, as this valve is designedas a seated valve. A reversal of the directionof flow is possible up to approx. 2 x Q max . A further benefit of type CDK is the mountinghole, which can be easily manufactured (seedimensions).Special feature of type DK is the trackedpressure switch, where setting of pressureand switch takes place simultaneously viaonly one adjustment device.