Hydraulic relief valve PRFA series

fluidminiatureshut-off

This direct-acting valve is ideally suited for low flow (less than 0.31 GPM) hydraulic applications where a miniature, lightweight pressure relief valve is needed. Minimum cracking pressures are available from 80-3600 psid. An integral safety screen is available for added protection.Safety Relief ValveDiameter: 0.250 inchesFull Open Lohm Rate: 4500 Lohms maxNominal System Pressure: Up to 3000 psiCracking Pressure Range: 80 to 3600 psiGeneral PerformanceCharacteristicSpecificationLeakage at Minimum Cracking Pressure2 mL / Minute MaximumLeakage at Minimum Shutoff Pressure2 mL / Minute MaximumNominal System PressureUp to 3000 psiSystem Peak Pressure4100 psi MaximumScreen Hole Size0.008 inches NominalScreen Open Area0.014 square inches NominalTest FluidMIL-PRF-83282 at 85°FMaterialsPARTMATERIALSPECIFICATIONBody Front304 CRESAMS 5639Body Rear304 CRESAMS 5639Pin17-4PH CRESAMS 5643Poppet15-5PH CRESAMS 5659Tube304 CRESAMS 5639Spring Seat304 CRESAMS 5639Spring17-7PH CRESAMS 5678Screen304L CRESASTM A 666Braze-AMS 4774Finish: All CRES parts passivated.Pins are prewaxed. Do not degrease. Do not lubricate.Replacement Parts & AccessoriesPART NUMBERDESCRIPTIONCUTA2500306CInstallation / Extraction Tool SetCKFA2500005AReplacement PinKey Product FactsDirect-acting, miniature, lightweight pressure relief valveLow flow applications (less than 0.31 GPM)Cracking pressure range: 80-3600 psidIntegral safety screen availablePart Numbers & SpecificationsPART NUMBERFLOW DIRECTIONMINIMUM CRACKING PRESSURE (psid)FLOW POINT LOHM RATEFLOW POINT MINIMUM FLOW (gpm)FLOW POINT AT (psid)MINIMUM SHUT-OFF PRESSURE (psid)PRFA2505080LForward8045000.0830072PRFA2505500LForward50045000.13750450PRFA2505100DForward100045000.191500900PRFA2505120DForward120045000.217001080PRFA2505140DForward140045000.2119001260PRFA2505220DForward220045000.2527001980PRFA2505250DForward250045000.2730002250PRFA2505300DForward300045000.2935002700PRFA2505320DForward320045000.2937002880PRFA2505340DForward340045000.339003060PRFA2505350DForward350045000.3140003150PRFA2505360DForward360045000.3141003240PRRA2505080LReverse8045000.0830072PRRA2505500LReverse50045000.13750450PRRA2505100DReverse100045000.191500900PRRA2505120DReverse120045000.217001080PRRA2505140DReverse140045000.2119001260PRRA2505220DReverse220045000.2527001980PRRA2505250DReverse250045000.2730002250PRRA2505300DReverse300045000.2935002700PRRA2505320DReverse320045000.2937002880PRRA2505340DReverse340045000.339003060PRRA2505350DReverse350045000.3140003150PRRA2505360DReverse360045000.3141003240Specifications / Technical CharacteristicsValve Type: Direct-acting pressure reliefFlow: Less than 0.31 GPMCracking Pressure Range: 80-3600 psidNominal System Pressure: Up to 3000 psiSystem Peak Pressure: 4100 psi maxDiameter: 0.250 inchesFull Open Lohm Rate: 4500 Lohms maxIntegral safety screen availableMaterials: 304 CRES, 17-4PH CRES, 15-5PH CRES, 17-7PH CRES, 304L CRESFinish: All CRES parts passivated, pins prewaxedTest Fluid: MIL-PRF-83282 at 85°F