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Picture of Parker 4M-RH4A-VT-SS-K3 - Relief Valves, 6,000 PSI - R Series

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Parker 4M-RH4A-VT-SS-K3 - 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-RH4A-VT-SS-K3
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Products specifications
Attribute nameAttribute value
Maximum Operating Temperature204 °CMaximum Operating Pressure1500 psi
Connection 2 Size1/4 inchConnection Size1/4 inch
Materials of ConstructionStainless Steel 316DivisionInstrumentation Products Division
Connection 1 SizeNPT MMinimum Operating Temperature-23 °C
Actuation TypeStandardFlow Coefficient0.41 Cv
Packing MaterialFluorocarbon RubberCracking Pressure750 to 1500 psi
Back-Up Washer MaterialPTFEConnection Size1/4"
Material316 Stainless SteelConnection 1 StyleNPT M
Connection 2 StyleNPT MConnection Size 21/4"
ActuationStandardPacking MaterialFluorocarbon Rubber
Cracking Pressure (psi)750 - 1500
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