Sun Hydraulics Catalog - BIBUS SK, sro

Logic ElementsBALANCED POPPET, NORMALLY CLOSED, VENT-TO-OPERATE2b4 cDrain3Pilot2PortPortaPerformance Curves1LocatingShoulder41NominalCapacity3TypicalCartridgeModel CodeCartridge DimensionsCavity a b cInstallationTorque(Nm)60 L/min. DKDR – XHN T-21A 35,0 22,2 45,2 45 - 50120 L/min. DKFR – XHN T - 22A 35,0 28,6 50,8 60 - 70240 L/min. DKHR – XHN T-23A 46,2 31,8 62,7 200 - 215480 L/min. DKJR – XHN T - 24A 63,5 41,3 80,3 465 - 500DKDR DKFR DKHR DKJRP = bar252015105P = bar252015105Piloted Open Pressure Differential vs. FlowP = bar252015105P = bar252015105010 20 30 40 50 60Flow = L/min.020 40 60 80 100 120Flow = L/min.Pilot Pressure vs. Pilot Flow040 80 120 160 200 240Flow = L/min.080 160 240 320 400 480Flow = L/min.Flow = L/min.1.41.21.8.6.4.2Flow = L/min.1.41.21.8.6.4.2Flow = L/min.1.41.21.8.6.4.2Flow = L/min.1.41.21.8.6.4.20 50 100 150 200 250 300 350 400P = bar0 50 100 150 200 250 300 350 400P = bar0 50 100 150 200 250 300 350 400P = bar■ Maximum operating pressure = 350 bar.■ Maximum valve leakage at 24 cSt = 0,3 cc/min.■ Minimum pilot pressure required to shift valve = DKDR, DKFR: 28 bar; DKHR, DKJR: 20 bar.■ Pilot passage into valve = DKDR, DKFR: 0,8 mm; DKHR, DKJR: 1,19 mm.■ Pilot volume displacement = DKDR: 0,16 cc; DKFR: 0,33 cc; DKHR: 0,82 cc; DKJR: 2,8 cc.■ Unique balanced construction provides predictable switching with 350 bar at both ports 1 and 2, with the vent(port 4) open and minimum pilot pressure at port 3.■ These valves are hydraulically balanced between port 1 and port 2.■ Valve will reseat when the pilot pressure falls below 10 bar.■ Port 1 and Port 2 are fully sealed from port 3 and port 4. Ports 3 and 4 are positively sealed.■ Port 4 may be externally connected to a pilot switching valve. The pilot valve should have a leakage rate of lessthan 10 drops/min. and be able to satisfy the pilot flow requirements. Sun model DA*-*** solenoid pilot valve isideal for this application.■ Leakage rate between port 1 and port 2 is less than 0,3 cc/min. at 350 bar.OPTION ORDERING INFORMATIONDK ✱ R – X ✱✱0 50 100 150 200 250 300 350 400P = barNominalCapacityControl Minimum Pilot Pressure Seal MaterialD 60 L/min. X Vent-to-operate DKDR, DKFR only: N Buna-NH 28 barF 120 L/min. V VitonDKHR, DKJR:H 240 L/min. 20 barJ480 L/min.Visit www.sunhydraulics.com for current list pricing and complete technical information on all Sun products.Int’l Shortcut Catalogue #999-901-312 101