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Picture of Parker 4F-RL4A-VT-SS-MN-KC - Relief Valves, 6,000 PSI - R Series

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Parker 4F-RL4A-VT-SS-MN-KC - 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. 4F-RL4A-VT-SS-MN-KC
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Products specifications
Attribute nameAttribute value
Maximum Operating Temperature400 °FMaximum Operating Pressure100 psi
Connection 2 Size1/4 inchConnection Size1/4 inch
Materials of ConstructionStainless Steel 316DivisionInstrumentation Products Division
Minimum Operating Temperature-10 °FConnection 1 SizeNPT F
Flow Coefficient0.75 CvPacking MaterialFluorocarbon Rubber
Cracking Pressure50 to 100 psiBack-Up Washer MaterialPTFE
Actuation TypeManual OverdriveConnection Size1/4"
Material316 Stainless SteelConnection 1 StyleNPT F
Connection 2 StyleNPT FConnection Size 21/4"
Packing MaterialFluorocarbon RubberCracking Pressure (psi)50 - 100
ActuationManual Overdrive
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