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Picture of Parker 4KM-RL4A-BNT-SS-KB - Relief Valves, 6,000 PSI - R Series

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Parker 4KM-RL4A-BNT-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. 4KM-RL4A-BNT-SS-KB
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Products specifications
Attribute nameAttribute value
Maximum Operating Temperature225 °FConnection 2 Size1/4 inch
Connection Size1/4 inchMinimum Operating Temperature-34 °C
Materials of ConstructionStainless Steel 316DivisionInstrumentation Products Division
Maximum Operating Pressure52 psiActuation TypeStandard
Flow Coefficient0.75 CvPacking MaterialNitrile Rubber
Cracking Pressure25 to 50 psiBack-Up Washer MaterialPTFE
Connection 1 SizeBSP MConnection Size1/4"
Material316 Stainless SteelConnection Size 21/4"
ActuationStandardPacking MaterialNitrile Rubber
Cracking Pressure (psi)25 - 50Connection 1 StyleBSP M
Connection 2 StyleBSP M
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