The balance valve is a valve that adjusts dynamic and static balance under hydraulic conditions. Such as static balancing valve, valve is also called balance valve, manual balancing valve, digital lock balance valve, double position regulating valve, etc. It changes the flow resistance flowing through the valve by changing the gap (opening) between the valve core and the valve seat. In order to achieve the purpose of regulating the flow, the object is the resistance of the system, which can balance the new water quantity according to the proportion calculated by the design, and the branches will increase and decrease at the same time, still satisfying the flow demand of the partial load under the current climate demand. , plays a role in heat balance. The dynamic balancing valve is divided into a dynamic flow balancing valve, a dynamic differential pressure balancing valve, and a self-operating self-pressure differential control valve.

Dynamic flow balance valve is also called: self-operated flow control valve, self-operated balance valve, constant flow valve, automatic balance valve, etc. It is automatically changed according to system operating conditions (pressure difference), and the pressure coefficient is changed at a certain pressure difference. Within the range, the flow rate can be effectively controlled to maintain a constant value, that is, when the pressure difference between the front and the back of the valve increases, the flow can be kept not increased by the automatic closing action of the valve, and vice versa, when the pressure difference is decreased, the valve Automatically open, the flow still remains constant, but when the pressure difference is less than or greater than the normal working range of the valve, it can not provide additional pressure after all, when the valve hits the fully open or fully closed position, the flow is still more than the set flow. Low or high cannot be controlled.

Dynamic differential pressure balancing valve, also known as self-operated differential pressure control valve, differential pressure controller, voltage variable synchronizer, differential pressure balance valve, etc., it uses differential pressure to adjust the opening of the valve, using the pressure of the spool The change is made to compensate for the change of the pipeline resistance, so that the pressure difference can be kept basically unchanged when the working condition changes. The principle is that the pressure difference of the controlled system can be effectively controlled within a certain flow range, that is, when When the pressure difference of the system increases, it can ensure the pressure difference of the controlled system increases by the automatic closing action of the valve. Otherwise, when the pressure difference is reduced, the valve automatically opens and the pressure difference remains constant. Self-powered differential pressure control valve, the automatic valve plug is closed in the control range, the pressure difference between the two ends of the valve exceeds the preset value, the valve plug automatically opens and automatically adjusts the opening under the action of the pressure sensitive membrane to maintain the pressure at both ends of the valve The difference is relatively constant.

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