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Picture of Parker 4M-RL4A-KZT-SS-KC - Relief Valves, 6,000 PSI - R Series

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Parker 4M-RL4A-KZT-SS-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. 4M-RL4A-KZT-SS-KC
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Products specifications
Attribute nameAttribute value
Maximum Operating Pressure100 psiMaximum Operating Temperature93 °C
Connection 2 Size1/4 inchConnection Size1/4 inch
Minimum Operating Temperature-20 °FMaterials of ConstructionStainless Steel 316
DivisionInstrumentation Products DivisionConnection 1 SizeNPT M
Actuation TypeStandardFlow Coefficient0.75 Cv
Packing MaterialHighly Fluorinated Fluorocarbon RubberCracking Pressure50 to 100 psi
Back-Up Washer MaterialPTFEConnection Size1/4"
Material316 Stainless SteelConnection 1 StyleNPT M
Connection 2 StyleNPT MConnection Size 21/4"
ActuationStandardPacking MaterialHighly Fluorinated Fluorocarbon Rubber
Cracking Pressure (psi)50 - 100
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