Self-operated flow control valve
Self-operated flow control valve is a new type of control valve. Compared with manual control valve, its advantage is that it can be automatically adjusted. Compared with electric control valve, its advantage is that it does not need external power. Practice has proved that in closed water circulation system (such as hot water heating system, air conditioning refrigeration system), the correct use of this valve can easily realize the flow of the system. It can achieve dynamic balance of the system, greatly simplify the debugging of the system, and stabilize the working state of the pump. Therefore, the self-operated regulating valve has broad application prospects in heating and air-conditioning engineering.
The function of self-operated flow control valve is to maintain the constant flow through the valve when the pressure difference between the inlet and outlet of the valve changes, so as to maintain the constant flow of the controlled object (such as a loop, a user, a device, etc.) in series with it. There are many names of self-operated flow control valve, such as self-operated flow balance valve, fixed flow valve, self-balancing valve and dynamic flow. Various types of self-operated flow control valves, such as balance valves, have different structures, but their working principles are similar.
The self-operated flow control valve is a double valve combination in structure, which consists of a manual control valve group and an automatic balance valve group. The function of the manual control valve group is to set the flow rate, and the function of the automatic balance valve group is to maintain the flow constant.
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