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Picture of Parker 4Z-RH4A-EPRT-SS-K2 - Relief Valves, 6,000 PSI - R Series

*PRODUCT IMAGE IS REPRESENTATIVE PROVIDED BY THE MANUFACTURER. DO NOT MAKE BUYING DECISIONS SOLEY BASED ON THE IMAGE. PLEASE VERIFY SPECIFICATIONS MEET YOUR REQUIREMENTS.

Parker 4Z-RH4A-EPRT-SS-K2 - Relief Valves, 6,000 PSI - R Series

Parker's R Series Relief Valves are designed such that when the upstream pressure exceeds the closing force exerted by the spring, the lower stem opens, permitting flow through the valve. Pressures range from 10 PSI (0.7 BAR) to 6,000 PSI (413.7 BAR).
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Brand Parker
Part No. 4Z-RH4A-EPRT-SS-K2
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Products specifications
Attribute nameAttribute value
Maximum Operating Pressure750 psiConnection Size1/4 inch
Maximum Operating Temperature135 °CMinimum Operating Temperature-57 °C
Materials of ConstructionStainless Steel 316DivisionInstrumentation Products Division
Connection 1 SizeSingle Ferrule CompressionConnection 2 SizeSingle Ferrule Compression
Actuation TypeStandardFlow Coefficient0.41 Cv
Packing MaterialEthylene Propylene RubberCracking Pressure350 to 750 psi
Back-Up Washer MaterialPTFEConnection Size1/4"
Material316 Stainless SteelConnection 1 StyleSingle Ferrule Compression Fitting
Connection 2 StyleSingle Ferrule Compression FittingConnection Size 21/4"
ActuationStandardPacking MaterialEthylene Propylene Rubber
Cracking Pressure (psi)350 - 750
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