How the PSL throttle valve works

PSL Throttle Valve is a crucial component in fluid control systems, and its working principle is based on the fundamental principles of fluid mechanics. When a fluid (whether liquid or gas) flows in a pipeline, its flow rate and pressure are influenced by various factors, such as the diameter of the pipeline, fluid density, viscosity, velocity, etc. And PSL Throttle Valve achieves precise control of fluid flow by changing these influencing factors.

The core components of PSL Throttle Valve are the valve core (throttling part) and valve seat. The valve core is usually a movable component, with its shape and size designed to be quite precise to ensure a tight fit with the valve seat. By adjusting the position of the valve core relative to the valve seat, the size of the fluid passage through the valve, which is the flow area, can be changed.

As the valve core approaches the valve seat, the flow area gradually decreases, resulting in an increase in the flow rate of fluid passing through the valve but a decrease in flow rate. This is because according to the Bernoulli equation, as the flow velocity of a fluid increases, its static pressure energy will be converted into dynamic pressure energy, resulting in a decrease in static pressure and limiting the flow rate of the fluid. On the contrary, when the valve core moves away from the valve seat, the flow area increases, the flow rate decreases, and the flow rate increases.

In order to achieve precise control of fluid flow, PSL Throttle Valve is also equipped with flow measurement devices and feedback control systems. The flow measurement device can monitor the actual flow rate of fluid through the valve in real time and compare it with the preset target flow rate. If there is a difference between the actual flow rate and the target flow rate, the feedback control system will immediately receive this signal and eliminate this difference by adjusting the position of the valve core.

The process of automatically adjusting the position of the valve core is continuous and dynamic, ensuring that the fluid flow rate remains near the set target value, thereby achieving precise control of the fluid system. The advantage of this control method is that it has high stability and accuracy, and can adapt to various complex fluid control requirements.