Parker M8Z-RH4A-KZT-SS-K1 - 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. M8Z-RH4A-KZT-SS-K1
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Products specifications
Attribute nameAttribute value
Maximum Operating Temperature93 °CMinimum Operating Temperature-29 °C
Materials of Construction316 Stainless SteelMaximum Operating Pressure350 psi
Cracking Pressure50 - 350 psiConnection Size8 mm
Connection 1 SizeSingle Ferrule Compression FittingActuation TypeStandard
DivisionInstrumentation Products DivisionConnection 2 SizeSingle Ferrule Compression Fitting
Packing MaterialHighly Fluorinated Fluorocarbon RubberBack-Up Washer MaterialPTFE
Flow Coefficient0.41 CvCracking Pressure (psi)50 - 350
Connection 1 StyleSingle Ferrule Compression FittingActuationStandard
Packing MaterialHighly Fluorinated Fluorocarbon RubberConnection 2 StyleSingle Ferrule Compression Fitting
Connection Size8 mmMaterial316 Stainless Steel
Connection Size 28 mm
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