2 - TCA spa

1CEBL SERIES LOAD CONTROL / HOLDING VALVEHOSE BURST PROTECTION - LINE MOUNTED (REF: ISO 8643)1CEBL153CLOADPILCDVPILDVSERVOPILOTINLETTYPICAL CIRCUIT6APPLICATIONThese overcentre valves are suitable for use on theboom and dipper cylinders of an excavator to help themanufacturer or user comply with standard ISO8643.They were designed to give relief, load holding andhose failure protection to systems where a pilotsystem controls the directional valves.PILOT RATIO22:1 To allow use with normal pilot systems whichcan be found on most excavatorsSPECIFICATIONSFigures based on: Oil Temp = 40°C Viscosity = 40 cStOPERATIONBy connecting the pilot line in parallel with the spoolvalve pilot, the high pilot ratio allows the valve to openjust prior to the spool valve, ensuring that the valve doesnot interfere with the normal operation of the machine.Both the pilot and the relief sections are unaffected byback pressure, enabling the service line reliefs tooperate normally, without interfering with the spool valvecontrol as it meters the return flow. In the event of hosefailure, the control will be passed from the main spool tothe overcentre valve, maintaining control of the cylinder.The pressure required to open the valve and startactuator movement can be calculated as follows:Pilot Pressure = (Relief Setting) - (Load Pressure)Pilot RatioFEATURESThis is a compact design with good dirt tolerance.Hardened poppets and seats provide excellent loadholding characteristics with all the advantages of thecartridge insert.Rated FlowMax SettingCartridge MaterialBody MaterialMounting PositionWeightSeal Kit NumberRecommendedFiltration LevelOperating TempLeakageNominal ViscosityRange150 litres/min (40 US GPM)350 bar (5000 psi)Working parts hardened and groundsteel. External surfaces electrolessnickel platedBright drawn mild steel bar. Zincplated and passivatedMount directly to the cylinder usingsteel pipe.1.5 kg ( 3.3 lbs)SK924BS5540/4 Class 18/13(25 micron nominal)-20°C to +90°C1.5 millilitres/min max5 to 500 cStIntegrated Hydraulics LimitedCollins Road, Heathcote Industrial Estate, Warwick, CV34 6TF, England.Tel: +44 (0) 1926 881171 Fax: +44 (0) 1926 315729 Website: www.integratedhydraulics.com6-491.A