Structural principle of throttle valve

A throttle valve is composed of a valve body, valve core, spring, sealing ring, etc. Among them, the valve body is the outermost layer of the throttle valve, and there is a throttle port inside it. The valve core is the core component of a throttle valve, which controls the flow rate by moving it up and down. The spring is used to control the movement of the valve core and maintain it in a certain position. The sealing ring is used to prevent liquid or gas leakage from the valve core.

The throttle valve controls the flow rate through the lifting and lowering of the valve core, and its working principle is to use the pressure difference of the fluid at the throttle port to control the flow rate. When liquid or gas passes through the throttling port, the frictional resistance between the pipe wall and the throttling port in the pipeline causes a pressure drop of the fluid at the throttling port. The valve core of the throttle valve changes the size of the throttle port by moving it up and down, thereby adjusting the pressure drop at the throttle port and controlling the flow rate.