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4.5: Flow Control Valves

  • Page ID
    3656
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    A YouTube element has been excluded from this version of the text. You can view it online here: https://openoregon.pressbooks.pub/hydraulics/?p=120

    Describe how restriction style flow control valves control flow in a hydraulic system making use of a fixed displacement pump and a pressure relief valve.

     

    Draw the schematic symbols for the following devices:

    fixed flow control valve

    adjustable flow control valve

    adjustable flow control valve with check valve bypass

    pressure compensated adjustable flow control valve with check valve bypass

    temperature and pressure compensated adjustable flow control valve with check valve bypass

     

    Given the orientation of this adjustable flow control valve with check valve bypass determine the direction of free flow and the direction of controlled flow.

    valve-10.png

    Draw a cutaway view of an adjustable flow control valve with check valve bypass and discuss how it functions.

     

    Describe how an adjustable flow control valve with check valve bypass responds to these scenarios:

    input pressure increases and load stays the same

    input pressure decreases and load stays the same

    input pressure stays the same and load decreases

    input pressure stays the same and load increases

    input pressure and load return to initial conditions

     

    Draw a cutaway view of a pressure compensated adjustable flow control valve with check valve bypass and discuss how it functions.

     

    Describe how a pressure compensated adjustable flow control valve with check valve bypass responds to these scenarios:

    input pressure increases and load stays the same

    input pressure decreases and load stays the same

    input pressure stays the same and load decreases

    input pressure stays the same and load increases

    input pressure and load return to initial conditions

     

    Discuss how a temperature and pressure compensated adjustable flow control valve with check valve bypass functions.

     

    Describe how a pressure compensated adjustable flow control valve with check valve bypass enhances the performance of multi actuator systems.

     

    Discuss how a bypass type flow control valve works and differentiate between it and a restriction style flow control valve.

     

    Discuss means other than manually changing flow rate.
    Describe lunge control.