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EDRV dynamic balance electric control valve is a new generation product different from the traditional electric control valve. It is an integrated product of dynamic balance and electric control. As shown in the figure below, in the flow system with large fluctuation, when the system pressure changes, the differential pressure P1-P3 of the second section of edrv dynamic balance electric control valve also changes.

(1) When the inlet pressure P1 rises, P1-P2 increases, which is the upward movement of the electric valve spool, reducing the opening between p1p2 and the spool pressure P2; When the inlet pressure P1 decreases, the opening between P1-P2 increases and the spool pressure P2 increases. Therefore, no matter how the pressure of the system changes, the differential pressure formula of P2 and P3 keys remains unchanged through the regulation of the electric valve spool. Therefore, the electric valve has strong anti-interference ability and dynamic balance function;

(2) When the electric actuator receives the control signal to rotate the valve shaft in the R direction, the opening of P2 and P3 keys also changes,. No matter how the system differential pressure P1-P3 changes, the differential pressure P2-P3 of P2 and P3 keys remains unchanged in the formula P2-P3. Therefore, corresponding to any opening position, the water flow transmitted by the electric control valve is certain, and the actual flow characteristic curve of the electric control valve is consistent with its flow characteristic curve at any time. There is no deviation. Therefore, the electric control valve has better regulation characteristics than the traditional electric control valve.