How does the PE Ball Valve work

Structural composition
The structural composition of the PE ball valve is the basis of its working principle. It is mainly composed of valve body, ball, valve stem, sealing ring and handle. The valve body is the shell of the entire valve, usually made of polyethylene (PE) material with strong chemical resistance and suitable for various corrosive media. The ball is a round ball with a through hole, installed inside the valve body, and controls the fluid switch by rotating. The surface of the ball is usually precision machined to ensure close contact with the sealing ring and provide good sealing performance. The valve stem connects the ball and the handle and is responsible for transmitting the rotational motion of the handle to the ball. The handle is used for manual operation and is usually located outside the valve body. The rotation direction of the ball can be controlled by rotating the handle. The sealing ring is a key sealing component, usually made of wear-resistant, high-temperature-resistant and corrosion-resistant materials, ensuring the sealing between the ball and the valve body and preventing fluid leakage. High-quality seals can increase the service life and reliability of the valve.

Working process
The working process of the PE ball valve is based on the rotation of the ball to control the flow of fluid. When the handle rotates, the valve stem and the ball are driven to rotate together. There is a through hole on the ball. When the through hole is in the same direction as the pipe, the fluid can freely pass through the valve and reach a fully open state. At this time, the fluid resistance is minimal and the flow rate is almost unrestricted. A fully open ball valve, often referred to as a "full bore" design, ensures minimal pressure drop and efficient fluid flow. When the handle is rotated 90 degrees, the solid part of the sphere blocks the pipe, and the fluid is completely blocked, reaching a completely closed state. This simple and effective working principle makes the PE ball valve very fast in switching operation. It only needs to be rotated 90 degrees to achieve full opening or full closing, which is easy and fast to operate. In addition, the design of the ball makes the friction generated during the opening and closing process small, reducing the wear on the ball and sealing ring, and extending the service life of the valve.

Sealing performance
Sealing performance is one of the important indicators to measure the quality of PE ball valve. The sealing performance of PE ball valve mainly depends on the sealing ring between the ball and the valve body. Seals are usually made of wear-resistant, high-temperature-resistant and corrosion-resistant materials, such as polytetrafluoroethylene (PTFE). When the ball valve is in the closed state, the solid part of the ball presses tightly against the sealing ring to ensure that there is no fluid leakage. The high-quality sealing ring material not only improves the pressure resistance of the valve, but also enhances its corrosion resistance, making it suitable for transporting various chemical media. In order to further improve the sealing performance, the ball surface of the PE ball valve is usually precision machined and polished to ensure a perfect fit with the sealing ring. In addition, some high-end PE ball valves also adopt a double sealing ring design, forming a barrier between the two sealing rings. Even if one sealing ring fails, the other can continue to provide sealing protection. This design not only improves the safety and reliability of the valve, but also extends its service life.

Operation method
PE ball valves can be operated in a variety of ways to meet the needs of different application scenarios. Manual operation is the most common way, and the rotation of the ball is controlled by the rotation of the handle to realize the opening and closing of the valve. This operation method is simple and intuitive, suitable for most occasions, especially small and medium-sized pipeline systems. For occasions requiring automated control or remote operation, pneumatic or electric actuators can be equipped. Pneumatic actuators drive the rotation of the valve stem and ball through compressed air. They have the advantages of fast response and precise control, and are suitable for industrial automation control systems. Electric actuators use electric motors to drive the rotation of the valve stem and ball, and are suitable for occasions that require precise adjustment and remote monitoring. Electric actuators are usually equipped with a position feedback device, which can monitor the valve's switching status in real time to facilitate operation and maintenance. Whether it is manual operation or automatic control, PE ball valves can provide reliable switch control and excellent sealing performance.