Parker 4A-RL4A-VT-SS-MN-KA - 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. 4A-RL4A-VT-SS-MN-KA
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Products specifications
Attribute nameAttribute value
Maximum Operating Temperature400 °FMaximum Operating Pressure25 psi
Connection 2 Size1/4 inchConnection Size1/4 inch
Materials of ConstructionStainless Steel 316DivisionInstrumentation Products Division
Connection 1 SizeTwo Ferrule CompressionMinimum Operating Temperature-10 °F
Flow Coefficient0.75 CvPacking MaterialFluorocarbon Rubber
Cracking Pressure10 to 25 psiBack-Up Washer MaterialPTFE
Actuation TypeManual OverdriveConnection Size1/4"
Material316 Stainless SteelConnection 1 StyleTwo Ferrule Compression Fitting
Connection 2 StyleTwo Ferrule Compression FittingConnection Size 21/4"
Packing MaterialFluorocarbon RubberCracking Pressure (psi)10 - 25
ActuationManual Overdrive
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