2 - TCA spa

1DDR35 SERIES DUAL RELIEF VALVEDIRECT ACTING1DDR35POPPET TYPEP1P13P2P2APPLICATIONTo protect directional valves and actuators from shock orsurge pressures induced by changes in direction orsudden stops which create excessive load conditions.FEATURESSoft start and stop with fast acting operation to givemaximum protection to expensive actuators. Reducesplumbing to a minimum.OPERATIONThe dual relief is of the cross line type, where exhaustoil from one line is transferred to the other, negating theneed for a separate tank line. It also prevents cavitationwhen used in conjunction with a closed centredirectional valve. For greatest protection the valve shouldbe mounted as close to the actuator or motor aspossible.Note for single rod cylinders, anti-cavitation check valvesand a separate tank line are necessary.See page number 3-151.PRESSURE DROPSPECIFICATIONSFigures based on: Oil Temp = 40°C Viscosity = 40 cStRated FlowMax SettingCartridge MaterialBody MaterialMounting Position30 litres/min (8 US GPM)350 bar (5000 psi)Working parts hardened and groundsteel. External surfaces zinc platedStandard aluminium (up to 210 bar*)Add Suffix ‘377’ for steel optionLine mountedFLOW-US GPMWeight0.58 kg (1.28 lbs)02.557.5 10 12.54006000Seal Kit NumberSK243 (Nitrile) SK243V (Viton)PRESSURE-BAR350300250200150100500102030FLOW LITRES/MINIntegrated Hydraulics Ltd4050500040003000200010000PRESSURE-PSIRecommendedFiltration LevelOperating TempLeakageNominal ViscosityRangeBS5540/4 Class 18/13(25 micron nominal)-20°C to +90°C0.3 millilitres/min max (5 dpm)5 to 500 cSt*For applications above 210 bar please consult our technical department or use the steel body option.Integrated 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.com3-111.C