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

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Parker 4Z-RL4A-BNT-SS-MN-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. 4Z-RL4A-BNT-SS-MN-KB
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Products specifications
Attribute nameAttribute value
Maximum Operating Temperature107Connection Size1/4
Connection 2 Size1/4Materials of ConstructionStainless Steel 316
DivisionInstrumentation Products DivisionConnection 1 SizeSingle Ferrule Compression
Minimum Operating Temperature-34Packing MaterialNitrile Rubber
Back-Up Washer MaterialPTFEActuation TypeManual Overdrive
Flow Coefficient0.75Cracking Pressure25 to 50
Maximum Operating Pressure52Connection Size1/4"
Material316 Stainless SteelConnection 1 StyleSingle Ferrule Compression Fitting
Connection 2 StyleSingle Ferrule Compression FittingConnection Size 21/4"
Packing MaterialNitrile RubberCracking Pressure (psi)25 - 50
ActuationManual Overdrive
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