Edrv dynamic balance electric control valve

The dynamic balance electric control valve is a new generation product which is different from the traditional electric control valve. It is an integrated product of dynamic balance and electric control.

In the variable flow system with large fluctuation of system load, when the system pressure changes, the pressure difference (P1-P3) at the second end of the dynamic balance electric control valve also changes

(1) When the inlet pressure P1 increases, (P1-P2) increases, the spool of the electric valve moves upward, reducing the opening between P1 and P2 and reducing the spool pressure P2; when the inlet pressure P1 decreases, (P1-P2) decreases, the spool of the electric valve moves downward, increasing the opening between P1 and P2 and increasing the spool pressure P2. Therefore, no matter how the pressure of the system changes, the pressure difference between P2 and P3 remains unchanged through the regulation of the electric valve spool. Therefore, the dynamic valve has strong anti-interference ability and dynamic balance function;

(2) When the straight stroke electric actuator receives the control signal to make the valve shaft move up and down along AB (or the angular stroke electric actuator receives the control signal to make the valve shaft rotate along R), the opening between P2 and P3 also changes. No matter how the system pressure difference (P1-P3) changes, the pressure difference (P2 — P3) between P2 and P3 remains unchanged, so corresponding to any opening position, the delivered water flow is constant, and the actual flow characteristic curve of the electric control valve is consistent with its ideal flow characteristic curve without deviation. Therefore, this kind of electric control valve has better regulation characteristics than the traditional electric control valve.