Automatic control valve structure and working principle

Self-operated control valve is a new type of self-operated control valve. Compared with the manual control valve, the valve actuator has the advantage of being able to adjust automatically; compared with the electric control valve, its advantage is that it does not require external power. Application practice has proved that in closed water circulation systems (such as hot water heating systems, air conditioning and chilled water systems), the correct use of this valve can easily realize the flow distribution of the system; it can realize the dynamic balance of the system; it can greatly simplify the system The debugging work; can stabilize the working state of the pump. Therefore, the self-operated control valve has broad application prospects in heating and air conditioning projects.

The function of the self-operated flow control valve is to maintain a constant flow through the valve when the pressure difference between the inlet and outlet of the valve changes, so as to maintain the controlled object (such as a loop, a user, The flow rate of a device, etc., the same below) is constant. Self-operated flow control valves have many names, such as self-operated flow balancing valves, constant flow valves, self-balancing valves, and dynamic flow balancing valves. Various types of self-operated flow control valves and solenoid valves have different structures, but their working principles are similar.

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