Sun Hydraulics Catalog - BIBUS SK, sro

Reducing and Reducing/Relieving Valves, Electro-ProportionalDIRECT ACTING, LOW LEAKAGEd1b3Tank2Inleta1Reduced PressurePerformance CurvescLocatingShoulderCapacityTypicalCartridgeModel CodeCartridge DimensionsCavity a b c*** dInstallationTorque(Nm)20 L/min. PRDP - MDN T-11A 35,1 22,2 108,2 37,3 45 - 50***An additional 50,8 mm clearance is needed for coil installation and removal.P = bar30201023Pressure vs. FlowE Spring Range ShownRelieving ReducingP = barPRDP2015105Command vs.Secondary PressureE Spring Range ShownSee www.sunhydraulics.comfor additional performance curves.■■0-30 -20 -10 0 10 20 30Flow = L/min.0 20 40 60 80Command (volts)Maximum operating pressure = 350 bar.Maximum valve leakage at 24 cSt = 41 cc/min. Leakage specified is out of port 3 with a supply pressure of 140 bar and thevalve set at mid-range. This leakage is directly proportional to pressure differential and inversely proportional to viscosityexpressed in centistokes.■ The transition from reducing to relieving is closed. The result is very low leakage. However, there is a transitional stepincrease in pressure between reducing and relieving modes. The step equals about 5% of the high end of the adjustment range,independent of the valve setting.■ Hysteresis with dither =