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

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Parker 4KF-RL4A-BNT-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. 4KF-RL4A-BNT-SS-MN-KC
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Products specifications
Attribute nameAttribute value
Maximum Operating Pressure100 psiMaximum Operating Temperature225 °F
Connection 2 Size1/4 inchConnection Size1/4 inch
Minimum Operating Temperature-34 °CMaterials of ConstructionStainless Steel 316
DivisionInstrumentation Products DivisionFlow Coefficient0.75 Cv
Packing MaterialNitrile RubberCracking Pressure50 to 100 psi
Back-Up Washer MaterialPTFEActuation TypeManual Overdrive
Connection 1 SizeBSP FConnection Size1/4"
Material316 Stainless SteelConnection Size 21/4"
Packing MaterialNitrile RubberCracking Pressure (psi)50 - 100
ActuationManual OverdriveConnection 1 StyleBSP F
Connection 2 StyleBSP F
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