Sun Hydraulics Catalog - BIBUS SK, sro

Hybrid ValvesPILOT OPERATED, BALANCED PISTON, VENTABLE, RELIEF, BEFORE CHECK,WITH INTEGRAL PILOT CONTROL CAVITYbT-8A Cavity13The -8 control option allows the pilot control valve to be incorporated directlyinto the end of the relief cartridge via the T-8A cavity. These pilot controlcartridges are sold separately and include electro-proportional, solenoid, airpilot, and hydraulic pilot operation. See Pilot Control Cartridges on page 141.4Ventc2T-8A43Tank2InletaLocatingShoulderCapacityTypicalCartridgeModel CodeCartridge DimensionsCavity a b cInstallationTorque(Nm)40 L/min. HVCA – 8D* T - 21A 35,0 22,2 45,2 45 - 501OutletPerformance CurvesFlow from Port 2 to Port 3with Port 1 Blocked300HVCA-845Flow fromPort 2 to Port 1P = bar2001000MinimumSetting20 40 60Flow = L/min.P = bar3015020 40 60Flow = L/min.■■■■■■■■■Maximum operating pressure = 350 bar.Maximum relief valve leakage at reseat = 0,3 cc/min.Maximum check valve leakage = less than 0,07 cc/min.Typical response time = 10 ms.Check cracking pressure = 1,7 bar.The main stage orifice is protected against contamination.One purpose of this dual function cartridge is to offer pump isolation and relief protection in single and/or multiple pumpcircuits. Another purpose is to act as a main stage in an accumulator sense, pump unload circuit.With the -8 control option, the main stage valve should first be installed to the correct torque value. The T-8A pilot controlvalve should then be installed into the main stage valve to its required torque value.This valve deviates from Sun's normal flow path for relief valves. It is probably not useable in existing standard Sun reliefmanifolds.OPTION ORDERING INFORMATIONH V C A – 8 D ✱NominalCapacityControl Adjustment Range Seal MaterialC 40 L/min. 8 with T-8A cavity D 5 bar N Buna-Nin hex body forpilot operation.V VitonSee pilot controlsection for alternateoptions.Visit www.sunhydraulics.com for current list pricing and complete technical information on all Sun products.Int’l Shortcut Catalogue #999-901-312 175