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.

RL4 Series

142 items

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  • Parker RL4A Series Relief Valve
    4A-RL4A-KZT-SS-MN-KA

    Parker Hannifin

    Product Type: Relief Valves

    Parker RL4A Series Relief Valve, 1/4" x 1/4", A-LOK Double Ferrule Compression x A-LOK Double Ferrule Compression, 400 PSIG CWP/10 to 25 PSIG Cracking, 316 Stainless Steel, Highly Fluorinated Fluorocarbon Rubber Seal, Manual Overdrive Handle, Adjustable...
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  • Parker A-LOK RL4 Series Relief Valve
    4A-RL4A-KZT-SS-MN-KB

    Parker Hannifin

    Product Type: Plug Valves

    End 1 Type: Double Ferrule Compression

    End 2 Type: Double Ferrule Compression

    Parker A-LOK RL4 Series Rotary Plug Valve, 1/4" A-LOK® Compression, RL4A Valve Series, Highly Fluorinated Fluorocarbon Rubber Seal, PTFE Back-up Ring, Stainless Steel Body, Automatic with Manual Overide Operated.
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  • Parker RL4A Series Relief Valve
    4Z-RL4A-VT-SS-KB-C3

    Parker Hannifin

    Product Type: Relief Valves

    Parker RL4A Series Relief Valve, 1/4" x 1/4", CPI Single Ferrule Compression x CPI Single Ferrule Compression, 400 PSIG CWP/25 to 50 PSIG Cracking, 316 Stainless Steel, Fluorocarbon Rubber Seal, Adjustable Pressure, Angle, Relief Valve for Oxygen Service.
    Qty in Cart: 0
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  • Parker RL4A Series Relief Valve
    4A-RL4A-NET-SS-KG

    Parker Hannifin

    Product Type: Relief Valves

    Parker RL4A Series Relief Valve, 1/4" x 1/4", A-LOK Double Ferrule Compression x A-LOK Double Ferrule Compression, 400 PSIG CWP/225 to 400 PSIG Cracking, 316 Stainless Steel, Neoprene Rubber Seal, Adjustable Pressure, Angle, Relief Valve.
    Qty in Cart: 0
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  • Parker RL4A Series Relief Valve
    4Z-RL4A-KZT-SS-MN-KA

    Parker Hannifin

    Product Type: Relief Valves

    Parker RL4A Series Relief Valve, 1/4" x 1/4", CPI Single Ferrule Compression x CPI Single Ferrule Compression, 400 PSIG CWP/10 to 25 PSIG Cracking, 316 Stainless Steel, Highly Fluorinated Fluorocarbon Rubber Seal, Manual Overdrive Handle, Adjustable...
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  • Parker RL4A Series Relief Valve
    4A-RL4A-EPRT-SS-KA

    Parker Hannifin

    Product Type: Relief Valves

    Parker RL4A Series Relief Valve, 1/4" x 1/4", A-LOK Double Ferrule Compression x A-LOK Double Ferrule Compression, 400 PSIG CWP/10 to 25 PSIG Cracking, 316 Stainless Steel, Ethylene Propylene Rubber Seal, Adjustable Pressure, Angle, Relief Valve.
    Qty in Cart: 0
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  • Parker RL4A Series Relief Valve
    4A-RL4A-BNT-SS-MN-KC

    Parker Hannifin

    Product Type: Relief Valves

    Parker RL4A Series Relief Valve, 1/4" x 1/4", A-LOK Double Ferrule Compression x A-LOK Double Ferrule Compression, 400 PSIG CWP/50 to 100 PSIG Cracking, 316 Stainless Steel, Nitrile Rubber Seal, Manual Overdrive Handle, Adjustable Pressure, Angle, Relief...
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  • Parker RL4A Series Relief Valve
    4M4F-RL4A-BNT-SS-KC

    Parker Hannifin

    Product Type: Relief Valves

    Parker RL4A Series Relief Valve, 1/4" x 1/4", MPT x FPT, 400 PSIG CWP/50 to 100 PSIG Cracking, 316 Stainless Steel, Nitrile Rubber Seal, Adjustable Pressure, Angle, Relief Valve.
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