DIRECTIONAL PROPORTIONAL VALVES — OPEN LOOP

    HD-4WRZ(E) SERIES

    HUADE LOGO

    The HD-4WRZ(E) series by Huade is a two-stage pilot-operated proportional directional valve, designed for proportional control of direction and flow in high-flow circuits. The 4WRH variant allows purely external hydraulic actuation without a pilot solenoid. 

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    Details

    • Available sizes: NG10–NG16–NG25–NG32

    • Control type: open loop (4WRZ — external control electronics)

    • Open loop with integrated electrical control

    • External hydraulic actuation (4WRH — no pilot solenoid)

    • Configurations: 4/3-way (2 solenoids) and 4/2-way (1 solenoid)

    • Maximum operating pressure: 315 bar

    • Compatible fluids: mineral oil (NBR seals); phosphate ester (FPM seals)

    • Return: spring-centred

     

     

    12-MONTH WARRANTY

    Benefits

    • Adaptable to any circuit architecture thanks to 4 pilot supply configurations
    • Integrated position transducer and electronics ensure high precision
    • Handles high flow rates up to 1,600 L/min

    Application fields

    • Large-tonnage hydraulic presses
    • Steel plants and rolling mills
    • High-flow plastics processing machinery
    • Sheet metal and rubber processing machinery
    • Marine and offshore systems — J version
    • High-flow test benches and hydraulic testing systems






     

    Technical data sheet HD-4WRZ(E) series Huade

    Code SizeQ max (l/min)P max (bar)
    HD-4WRZ(E)10
    10
    170 315
    HD-4WRZ(E)16
    16
    460 350
    HD-4WRZ(E)25
    25
    870 350
    HD-4WRZ(E)32
    32
    1600 350
    Code HD-4WRZ(E)10
    Size 10
    Q max (l/min) 170
    P max (bar) 315
    Code HD-4WRZ(E)16
    Size 16
    Q max (l/min) 460
    P max (bar) 350
    Code HD-4WRZ(E)25
    Size 25
    Q max (l/min) 870
    P max (bar) 350
    Code HD-4WRZ(E)32
    Size 32
    Q max (l/min) 1600
    P max (bar) 350
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