Parker Hannifin RH4 Series Hydraulically Pilot Operated Check Valves

The hydraulically pilot operated check valves series RH for in-line mounting are proven components of Parker's check valve product range which ensure a leak-free blocking of the flow and thus a reliable operation. They allow free flow in one direction (B to A), the counter flow is blocked (A to B). By applying pilot pressure the ball can be lifted from its seat and allows flow from A to B.

RH4 Series

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  • Parker RL4A Series Relief Valve
    4M4Z-RH4A-BNT-SS-K6 Parker Relief Valve
    4M4Z-RH4A-BNT-SS-K6

    Parker Hannifin

    Product Type: Relief Valves

    Parker RH4A Series Relief Valve, 1/4" x 1/4", MPT x CPI Single Ferrule Compression, 6000 PSIG CWP/3000 to 4000 PSIG Cracking, 316 Stainless Steel, Nitrile Rubber Seal, Adjustable Pressure, Angle, Relief Valve.
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  • Parker RL4A Series Relief Valve
    4F-RH4A-BNT-SS-K1 Parker Relief Valve
    4F-RH4A-BNT-SS-K1

    Parker Hannifin

    Product Type: Relief Valves

    Parker RH4A Series Relief Valve, 1/4" x 1/4", FPT x FPT, 6000 PSIG CWP/50 to 350 PSIG Cracking, 316 Stainless Steel, Nitrile Rubber Seal, Adjustable Pressure, Angle, Relief Valve.
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  • Parker RL4A Series Relief Valve
    4M4F-RH4A-KZT-SS-K3 Parker Relief Valve
    4M4F-RH4A-KZT-SS-K3

    Parker Hannifin

    Product Type: Relief Valves

    Parker RH4A Series Relief Valve, 1/4" x 1/4", MPT x FPT, 6000 PSIG CWP/750 to 1500 PSIG Cracking, 316 Stainless Steel, Highly Fluorinated Fluorocarbon Rubber Seal, Adjustable Pressure, Angle, Relief Valve.
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  • Parker RL4A Series Relief Valve
    4Z-RH4A-BNT-SS-MN-K3 Parker Relief Valve
    4Z-RH4A-BNT-SS-MN-K3

    Parker Hannifin

    Product Type: Relief Valves

    Parker RH4A Series Relief Valve, 1/4" x 1/4", CPI Single Ferrule Compression x CPI Single Ferrule Compression, 6000 PSIG CWP/750 to 1500 PSIG Cracking, 316 Stainless Steel, Nitrile Rubber Seal, Manual Overdrive Handle, Adjustable Pressure, Angle, Relief...
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  • Parker RL4A Series Relief Valve
    4Z-RH4A-BNT-SS-MN-K2 Parker Relief Valve
    4Z-RH4A-BNT-SS-MN-K2

    Parker Hannifin

    Product Type: Relief Valves

    Parker RH4A Series Relief Valve, 1/4" x 1/4", CPI Single Ferrule Compression x CPI Single Ferrule Compression, 6000 PSIG CWP/350 to 750 PSIG Cracking, 316 Stainless Steel, Nitrile Rubber Seal, Manual Overdrive Handle, Adjustable Pressure, Angle, Relief...
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  • Parker RL4A Series Relief Valve
    4A-RH4A-BNT-SS-MN-K3 Parker Relief Valve
    4A-RH4A-BNT-SS-MN-K3

    Parker Hannifin

    Product Type: Relief Valves

    Parker RH4A Series Relief Valve, 1/4" x 1/4", A-LOK Double Ferrule Compression x A-LOK Double Ferrule Compression, 6000 PSIG CWP/750 to 1500 PSIG Cracking, 316 Stainless Steel, Nitrile Rubber Seal, Manual Overdrive Handle, Adjustable Pressure, Angle,...
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  • Parker RL4A Series Relief Valve
    4A-RH4A-BNT-SS-MN-K2 Parker Relief Valve
    4A-RH4A-BNT-SS-MN-K2

    Parker Hannifin

    Product Type: Relief Valves

    Parker RH4A Series Relief Valve, 1/4" x 1/4", A-LOK Double Ferrule Compression x A-LOK Double Ferrule Compression, 6000 PSIG CWP/350 to 750 PSIG Cracking, 316 Stainless Steel, Nitrile Rubber Seal, Manual Overdrive Handle, Adjustable Pressure, Angle,...
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  • Parker RL4A Series Relief Valve
    4M4A-RH4A-VT-SS-K8 Parker Relief Valve
    4M4A-RH4A-VT-SS-K8

    Parker Hannifin

    Product Type: Relief Valves

    Parker RH4A Series Relief Valve, 1/4" x 1/4", MPT x A-LOK Double Ferrule Compression, 6000 PSIG CWP/5000 to 6000 PSIG Cracking, 316 Stainless Steel, Fluorocarbon Rubber Seal, Adjustable Pressure, Angle, Relief Valve.
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