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

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Parker 4Z-RL4A-BNT-SS-MN-KD - 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-KD
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Products specifications
Attribute nameAttribute value
Maximum Operating Temperature107Connection Size1/4
Maximum Operating Pressure150Connection 2 Size1/4
Materials of ConstructionStainless Steel 316DivisionInstrumentation Products Division
Connection 1 SizeSingle Ferrule CompressionMinimum Operating Temperature-34
Packing MaterialNitrile RubberBack-Up Washer MaterialPTFE
Actuation TypeManual OverdriveFlow Coefficient0.75
Cracking Pressure100 to 150Connection Size1/4"
Material316 Stainless SteelConnection 1 StyleSingle Ferrule Compression Fitting
Connection 2 StyleSingle Ferrule Compression FittingConnection Size 21/4"
Packing MaterialNitrile RubberActuationManual Overdrive
Cracking Pressure (psi)100 - 150
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