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 4M4F-RL4A-EPRT-SS-KE
    4M4F-RL4A-EPRT-SS-KE Parker RL4A-Series Adjustable Relief Valve
    4M4F-RL4A-EPRT-SS-KE

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: MNPT

    End 2 Type: FNPT

    Parker RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" MNPT (inlet) x 1/4" FNPT (outlet), 150-225 psig crack pressure, EPR seal
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  • Parker 4M4F-RL4A-EPRT-SS-KD
    4M4F-RL4A-EPRT-SS-KD Parker RL4A-Series Adjustable Relief Valve
    4M4F-RL4A-EPRT-SS-KD

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: MNPT

    End 2 Type: FNPT

    Parker RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" MNPT (inlet) x 1/4" FNPT (outlet), 100-150 psig crack pressure, EPR seal
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  • Parker RL4A Series Relief Valve
    4M-RL4A-VT-SS-KF Parker Relief Valve
    4M-RL4A-VT-SS-KF

    Parker Hannifin

    Product Type: Relief Valves

    Parker RL4A Series Relief Valve, 1/4" x 1/4", MPT x MPT, 400 PSIG CWP/10 to 225 PSIG Cracking, 316 Stainless Steel, Fluorocarbon Rubber Seal, Adjustable Pressure, Angle, Relief Valve.
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  • Parker 4M4A-RL4A-VT-SS-MN-KB
    4M4A-RL4A-VT-SS-MN-KB Parker RL4A-Series Adjustable Relief Valve
    4M4A-RL4A-VT-SS-MN-KB

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: MNPT

    End 2 Type: Double Ferrule Compression

    Parker RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" MNPT (inlet) x 1/4" double ferrule tube fitting (outlet), 25-50 psig crack pressure, fluorocarbon rubber seal, with manual override
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  • Parker 4M4A-RL4A-VT-SS-MN-KA
    4M4A-RL4A-VT-SS-MN-KA Parker RL4A-Series Adjustable Relief Valve
    4M4A-RL4A-VT-SS-MN-KA

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: MNPT

    End 2 Type: Double Ferrule Compression

    Parker RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" MNPT (inlet) x 1/4" double ferrule tube fitting (outlet), 0-25 psig crack pressure, fluorocarbon rubber seal, with manual override
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  • Parker 4M4A-RL4A-VT-SS-KA
    4M4A-RL4A-VT-SS-KA Parker RL4A-Series Adjustable Relief Valve
    4M4A-RL4A-VT-SS-KA

    Parker Hannifin

    Product Type: Relief Valves

    End 1 Type: MNPT

    End 2 Type: Double Ferrule Compression

    Parker RL4A-Series Adjustable Relief Valve, 316 SS body, 1/4" MNPT (inlet) x 1/4" double ferrule tube fitting (outlet), 0-25 psig crack pressure, fluorocarbon rubber seal
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  • Parker 4A-RL4A-VT-SS-KE
    4A-RL4A-VT-SS-KE Parker RL4A-Series Adjustable Relief Valve
    4A-RL4A-VT-SS-KE

    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, 150-225 psig crack pressure, fluorocarbon rubber seal
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  • Parker A-lok 4A-RL4A-VT-SS-KC
    4A-RL4A-VT-SS-KC Parker RL4A-Series Adjustable Relief Valve
    4A-RL4A-VT-SS-KC

    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, 50-100 psig crack pressure, fluorocarbon rubber seal
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