Parker 4Z-RL4A-NET-SS-KB - 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-RL4A-NET-SS-KB
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Products specifications
Attribute nameAttribute value
Maximum Operating Temperature121 °CConnection 2 Size1/4 inch
Connection Size1/4 inchMaterials of ConstructionStainless Steel 316
DivisionInstrumentation Products DivisionConnection 1 SizeSingle Ferrule Compression
Minimum Operating Temperature-43 °CActuation TypeStandard
Flow Coefficient0.75 CvPacking MaterialNeoprene Rubber
Cracking Pressure25 to 50 psiBack-Up Washer MaterialPTFE
Maximum Operating Pressure53 psiConnection Size1/4"
Material316 Stainless SteelConnection 1 StyleSingle Ferrule Compression Fitting
Connection 2 StyleSingle Ferrule Compression FittingConnection Size 21/4"
ActuationStandardPacking MaterialNeoprene Rubber
Cracking Pressure (psi)25 - 50
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