The working principle of ZYC self operated differential pressure control valve is shown in the following figure. When the water supply pressure P1 increases or decreases, the signal is transmitted to the upper chamber of the diaphragm through the connecting pipe, driving the valve core to move down or up, reducing or increasing the flow area of the valve seat, and increasing or decreasing P2-P3 until P1-P2 remains constant. At the moment when the return water pressure P3 increases or decreases, the flow rate from the valve seat to the outlet decreases or increases, and the pressure P2 under the diaphragm also increases or decreases at this moment, driving the valve core to move up or down until the force on the diaphragm is rebalanced, P2 returns to its original value, and P1-P2 protects the original value constant, thereby ensuring that the pressure difference between the supply and return water of the controlled system remains basically unchanged.
ZYC self operated pressure difference control valve is a valve that uses the pressure change of the medium itself to control itself and maintain the pressure difference of the medium flowing through the controlled system unchanged. Its function is to keep the pressure difference of the controlled loop constant when there is external disturbance (pressure fluctuation of the network) and internal disturbance (change of internal resistance) in the controlled loop. This valve is suitable for pressure difference control in heating systems using dual pipe systems, ensuring that the system remains basically unchanged, reducing noise, and balancing resistance, Eliminate thermal and hydraulic imbalances. |
