In order to ensure low temperature in the computer room of a Fortune 500 enterprise to reduce the heat output of the server, it is necessary to ensure that the difference between the supply and return water pressure is kept at 30KPA to maintain the design flow and ensure the safety of the server. The electronic differential pressure valve of our company is used to monitor the differential pressure of the pipe network in real time, and the PID control of the valve is used to ensure the accuracy of the differential pressure of 2%. The real-time adjustment is carried out, and the action is more than 1W per year, and the target value is guaranteed at.