On/Off Valve Actuators Requirements

  • On/Off Valve Actuators Requirements

     Chaitanya updated 11 months ago 1 Member · 1 Post
  • Chaitanya

    Member
    July 16, 2020 at 2:11 pm

    At minimum supply pressure, the actuator’s torque/thrust shall be 25 % above maximum torque/thrust required at max. the differential pressure across the valve.

    The actuator shall be provided with a local indicator showing the valve position.

    By loss of signal/supply the valve shall take the position required.

    Devices for control of the speed in both directions shall be installed on the control unit. It shall not be possible to fully close the restrictors.

    Electrical actuators may be used for non-safety applications.

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