2 - TCA spa

1PAA SERIES PRESSURE REDUCING / RELIEVING VALVEPILOT OPERATED1PAA60GUIDED PISTON TYPE2INLET (2)TANK (3)3REG (1)51APPLICATIONThis pilot operated valve can be used with flows of upto 30 litres/min (8 US GPM) and inlet pressures of upto 350 bar (5000 psi) in both reducing and relievingmodes. The inbuilt relief allows externally inducedpressures to be relieved back to tank. The valve isideal for secondary pressure control in any circuit.When using at pressure below 40 bar, consult graph.OperationThis valve is normally open allowing inlet oil to pass tothe regulated line until the outlet (regulated) pressureexceeds the setting of the pilot section. When thissetting is acheived a pilot flow occurs, causing apressure imbalance across the main spool, whichthen moves throttling the inlet flow and preventing anyfurther pressure rise in the regulated line. If anyexternal force causes the regulated pressure to risemore than 5-10% above the setting, the main spoolmoves back further, opening the regulated port to thetank line, thus working as a relief valve.FeaturesCartridge construction with hardened, ground and honedworking parts giving smooth, stable operation over allpressure ranges.SpecificationsFigures based on: Oil Temp = 40°C Viscosity = 40 cStRated FlowMax SettingBody MaterialMounting Position30 litres/min (8 US GPM)SEE GRAPH350 bar (5000 psi)Max Differential 210 bar (3000 psi) between 1 and 2Cartridge MaterialWorking parts hardened and groundsteel. External surfaces zinc platedStandard aluminium (up to 210 bar*)Add Suffix ‘377’ for steel optionUnrestrictedPressure DropCavity NumberTorque Cartridgeinto CavityCVB-22-06-0 (See Section 17)75 Nm (55 lbs ft)1611FLOW-US GPM5 05 1116Weight1PAA601PA650.23 kg (0.50 lbs)1.06 kg (2.30 lbs)PRESSURE-BAR3503002502001501001-32-1500043503625290021751450PRESSURE-PSISeal Kit NumberRecommendedFiltration LevelOperating TempPilot FlowSK632 (Nitrile) SK632V (Viton)BS5540/4 Class 18/13(25 micron nominal)-20°C to +90°C140 millilitres/min @ standard setting50'IN' TO 'REG' FULLY OPEN60 40 20 0 20 40FLOW LITRES/MINPRESSURERELIEVINGREGULATING60725Nominal ViscosityRange5 to 500 cSt*For applications above 210 bar please consult our technical department or use the steel body option.Integrated 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.com5-151.C