2 - TCA spa

4KD SERIES CHECK VALVEPILOT OPERATED WITH DECOMPRESSION STAGE4KD25VALVE (2)213CYL (1) PILOT (3)7APPLICATIONUsed to lock a cylinder or part of a circuit and preventreverse flow until pilot pressure is applied. For use inhigh pressure, low flow circuits and circuits requiringdecompression. Can be used in conjunction with the1T16 pressure intensifier. See page 16-121.FEATURESDecompression feature for low pilot pressurerequirements and to reduce hydraulic noise on rapid lossof pressure.OPERATIONIn free flow direction, flow through inlet unseats thepoppet and flows out of the cylinder port. When thecontrol valve is centred the load is locked. When pilotpressure is applied the piston unseats the smallpoppet in the centre of the main poppet. Flow throughthis small seat area lowers the load or lockedpressure (decompression stage). With load pressurereduced the main poppet is then piloted fully openallowing reverse flow.SPECIFICATIONSFigures based on: Oil Temp = 40°C Viscosity = 40 cStRated FlowMax PressurePilot Ratio25 litres/min (6 US GPM)700 bar (10000 psi) Cylinder Port140 bar ( 2000 psi) Pilot Port25:1 Decompression4:1 Full flowPRESSURE DROPBody MaterialMounting PositionSteelLine mounted081FLOW-US GPM2 3 4 5 67120Weight0.8 kg (1.8 lbs)Seal Kit Number SK1060 (Nitrile) SK1060V (Viton)PRESSURE-BAR642FREE FLOWPILOTED OPEN8040PRESSURE-PSIRecommendedFiltration LevelOperating TempNominal ViscosityRangeBS5540/4 Class 18/13(25 micron nominal)-20°C to +90°C5 to 500 cSt05 10FLOW-LITRES/MIN15 20 250Integrated Hydraulics LtdIntegrated Hydraulics IncCollins Road, Heathcote Ind. Est., Warwick, CV34 6TF, UK.7047 Spinach Drive, Mentor, Ohio 44060, USATel: +44 (0) 1926 881171 Fax: +44 (0) 1926 315729 Tel: (440) 974 3171 Fax: (440) 974 3170Website: www.integratedhydraulics.comWebsite: www.integratedhydraulics.com7-201.C