Parker Hannifin RL4 Series Relief Valves

Parker RL4 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. Flow through the valve increases proportionately to the increase in upstream pressure.

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RL4 Series

142 items

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  • Parker A-lok 4A-RL4A-VT-SS-KB
    4A-RL4A-VT-SS-KB Parker RL4A-Series Adjustable Relief Valve
    4A-RL4A-VT-SS-KB

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: Double Ferrule Compression

    End 2 Type: Double Ferrule Compression

    Parker A-lok RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" double ferrule tube fitting ends, 25-50 psig crack pressure, fluorocarbon rubber seal
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  • Parker A-lok 4A-RL4A-VT-SS-KA
    4A-RL4A-VT-SS-KA Parker RL4A-Series Adjustable Relief Valve
    4A-RL4A-VT-SS-KA

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: Double Ferrule Compression

    End 2 Type: Double Ferrule Compression

    Parker A-lok RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" double ferrule tube fitting ends, 0-25 psig crack pressure, fluorocarbon rubber seal
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  • Parker 4A-RL4A-VT-SS
    4A-RL4A-VT-SS Parker RL4A-Series Adjustable Relief Valve
    4A-RL4A-VT-SS

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: Double Ferrule Compression

    End 2 Type: Double Ferrule Compression

    Parker RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" double ferrule tube fitting ends, crack pressure, fluorocarbon rubber seal, without spring kit
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  • Parker 4A-RL4A-KZT-SS-KA
    4A-RL4A-KZT-SS-KA Parker RL4A-Series Adjustable Relief Valve
    4A-RL4A-KZT-SS-KA

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: Double Ferrule Compression

    End 2 Type: Double Ferrule Compression

    Parker RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" double ferrule tube fitting ends, 0-25 psig crack pressure, Kalrez seal
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  • Parker A-lok 4A-RL4A-BNT-SS-KA
    4A-RL4A-BNT-SS-KA Parker RL4A-Series Adjustable Relief Valve
    4A-RL4A-BNT-SS-KA

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: Double Ferrule Compression

    End 2 Type: Double Ferrule Compression

    Parker A-lok RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" double ferrule tube fitting ends, 0-25 psig crack pressure, Buna-N seal,
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  • Parker Instrumentation RL4 Series Relief Valve
    4M4F-RL4A-VT-SS-MN-KB Parker RL4 Series Relief Valve
    4M4F-RL4A-VT-SS-MN-KB

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: MPT

    End 2 Type: FPT

    Parker Instrumentation RL4 Series Relief Valve, 316 SS construction, 1/4 MPT x 1/4 FPT connection, fluorocarbon rubber seat and packing, PTFE back-up rings, manual overdrive, phenolic handle, adjustable cracking pressure 25-50 psig.
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