Especially in rolling mills where inflammable rolling oil or kerosene is used as a coolant (aluminium cold mills, aluminium foil mills) there is the demand for valves operating without the need for compressed air. The EVA valve is electrically controlled and fulfills this requirement.
Another important criteria is the failure-close operation with regard to the risk of mill fires. The EVA valve meets this criteria too.
The EVA valve can be pulsed, allowing operation to 5Hz if required. Pulsed operation allows for increased turn down ratios and improved control.