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    HOW SERIES DUAL COUNTERBALANCE VALVES FOR OPEN CENTRE

    Short Description:

    It provides static and dynamic control of load by regulating the flow IN and OUT of the actuator, through ports C1 and C2.This valve module includes 2 sections, each one composed by a check and a relief valve pilot assisted by pressure in the opposite line: the check section allows free flow into the actuator, then holds the load against reverse movement; with pilot pressure applied at the line across, the pressure setting of the relief is reduced in proportion to the stated ratio until opening and allowing controlled reverse flow. Back-pressure at V1 or V2 is additive to the pressure setting in all functions.


    Product Detail

    Product Tags

    21

    It provides static and dynamic control of load by regulating the flow IN and OUT of the actuator, through ports C1 and C2.This valve module includes 2 sections, each one composed by a check and a relief valve pilot assisted by pressure in the opposite line: the check section allows free flow into the actuator, then holds the load against reverse movement; with pilot pressure applied at the line across, the pressure setting of the relief is reduced in proportion to the stated ratio until opening and allowing controlled reverse flow. Back-pressure at V1 or V2 is additive to the pressure setting in all functions.

    Technical data

    Model HOW-3/8-50 HOW-1/2-80 HOW-3/4-120 HOW-1-160
    Flow Range (l/min) 50 80 120 160
    Max.Peak Pressure (MPa) 31.5
    Pilot Ratio 4.3:1 4.3:1 6.8:1 3:1
    Valve body(Material)Surface treatment (Steel body)Surface clear zinc plating
    Oil cleanliness NAS1638 class 9 and ISO4406 class 20/18/15

    Installation Dimensions

    555

    666


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