Cartridge relief valve PCHF series

differentialhydraulicfluid

This threadless, cartridge safety poppet pressure relief valve is designed to provide fast opening rates, stable flows, low hysteresis, quiet operation, and high cracking pressures. The 5.5 mm relief valve’s locking end uses the field-proven Lee Controlled Expansion Principle to provide secure retention and eliminate the need for threads, O-rings, or secondary retainers. This direct-acting relief valve features all stainless steel construction, making it compatible with a wide range of fluids. The valve is 100% functionally tested to ensure performance.Mounting Configuration: Insert - Into MetalDiameter: 5.46 mmFull Open Lohm Rate: 650 LohmsMaximum Working Pressure: 280 barRelief Pressure Range: 20 to 100 barGeneral PerformanceCharacteristicSpecificationFull Open Lohm Rate650 LohmsUprun LeakageValve will flow less than 1.0 cc/min at 90% of nominal cracking pressureFlow PointValve flow point at 125% of nominal cracking pressureReseatValve will flow less than 0.05 LPM at 88% of nominal cracking pressureMaximum Working Pressure Checked Direction280 barMaximum Working Pressure Differential Flow Direction280 barInstallation Force625 kgf (max)MaterialsComponentMaterialBody303 Stainless SteelStop416 Stainless SteelPin416 Stainless SteelSpring17-7 Stainless SteelPoppet416 Stainless SteelAssembly is pre-lubricated for proper installation. Do not clean prior to installation.Part Numbers & SpecificationsPart NumberFlow DirectionFull Open Lohm RateNominal Cracking PressureMinimum Flow at Flow PointFlow Point PressureFlow Point Maximum Lohm RateInstallation Hole Drawing NumberApproximate WeightPCHF5520020SForward650 Lohms20 bar (290 psid)1.0 LPM (0.3 GPM)25 bar1500 Lohms1INST056475S1.70 gramsPCHF5520040SForward650 Lohms40 bar (580 psid)1.8 LPM (0.5 GPM)50 bar1200 Lohms1INST056475S1.73 gramsPCHF5520060SForward650 Lohms60 bar (870 psid)2.5 LPM (0.7 GPM)75 bar1100 Lohms1INST056475S1.73 gramsPCHF5520080SForward650 Lohms80 bar (1160 psid)3.0 LPM (0.8 GPM)100 bar1050 Lohms1INST056475S1.73 gramsPCHF5520100SForward650 Lohms100 bar (1450 psid)3.5 LPM (0.9 GPM)125 bar1000 Lohms1INST056475S1.76 gramsPCHR5520020SReverse650 Lohms20 bar (290 psid)1.0 LPM (0.3 GPM)25 bar1500 Lohms1INST056475S1.70 gramsPCHR5520040SReverse650 Lohms40 bar (580 psid)1.8 LPM (0.5 GPM)50 bar1200 Lohms1INST056475S1.73 gramsPCHR5520060SReverse650 Lohms60 bar (870 psid)2.5 LPM (0.7 GPM)75 bar1100 Lohms1INST056475S1.73 gramsPCHR5520080SReverse650 Lohms80 bar (1160 psid)3.0 LPM (0.8 GPM)100 bar1050 Lohms1INST056475S1.73 gramsPCHR5520100SReverse650 Lohms100 bar (1450 psid)3.5 LPM (0.9 GPM)125 bar1000 Lohms1INST056475S1.76 gramsAll flows specified on hydraulic fluid at 80°F.Replacement Parts & Accessories: 5.5 mm Installation Tool (Part Number: CCRT0900120S)Installation Procedures: Forward and Reverse 5.5 mm Poppet Pressure Relief Valve Installation Procedures available.CAD Envelopes: Forward and Reverse 5.5 mm Poppet Pressure Relief Valve Models available.Flow Curve, Cross Section, Dimensional, and Installation Hole Views: See images in the gallery for detailed technical drawings and flow curves.Technical Data Sheets: Available for both Forward and Reverse Flow configurations.Handbook: Industrial MicroHydraulics Handbook of Automotive and Industrial Solutions available.Articles & Case Studies: Additional resources on pressure relief valve selection, performance, and applications are available.Key Technical Specifications:Mounting Configuration: Insert - Into MetalDiameter: 5.46 mmFull Open Lohm Rate: 650 LohmsMaximum Working Pressure: 280 barRelief Pressure Range: 20 to 100 barMaterials: 303, 416, 17-7 Stainless SteelInstallation Force: 625 kgf (max)Weight: ~1.7 grams