Electrical Position Feedback Two Stage Valve
In this particular design electrical positional feedback is taken from both the pilot and main stage; in alternative designs the pilot stage feedback is omitted. The pilot valve is operated by a single solenoid acting against an opposing spring; alternatively two opposing solenoids can be used. only one being activated at a time. In the construction shown, a pressure reducing module is interposed between the two stages. This provides constant reduced pilot supply pressure. irrespective of main supply pressure variations, providing improved valve performance characteristics.
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