In China, quick-connect ball valves are widely used in industries such as water conservancy, municipal engineering, power generation, pharmaceuticals, chemicals, long-distance pipelines, oil refining, papermaking, and steelmaking, playing a pivotal role in the national economy. These valves operate by rotating 90 degrees; the valve plug is a spherical body with a circular through-hole or passage that runs along its axis.

　　Ball valves are primarily used for diverting, shutting off, and changing the flow direction of media in pipelines; they can be closed with a 90-degree rotation and minimal actuating torque. Ball valves must be installed in piping systems to function. Typically, commercially available ball valves have internal threads on both ends, while the pipes have corresponding external threads that mate with these internal threads to connect to the valve.

　　However, given the need for a tight seal at the connection between the pipe and the ball valve, the conventional practice is to wrap the threaded end of the pipe with a waterproof membrane before screwing it into the ball valve—a procedure that is quite cumbersome.

　　To address the aforementioned problems in the prior art, technical personnel have developed a quick-connect ball valve that is easy to connect to pipelines. This quick-connect ball valve is implemented through the following technical solution: the valve comprises a sealing ring, a valve stem, a ball, a sealing gasket, a compression cap, a valve body, a valve cover, a handle, and a locking nut. The axial opening of the valve body is connected to the valve cover, and the spherical valve core is positioned within the cavity formed by the valve body and the valve cover. The valve stem is installed in the upper cylindrical chamber of the valve body, with its two ends respectively connected to the spherical valve core and the handle. The valve stem and the valve body are sealed by a sealing ring compressed by a compression cap, and the valve stem and the compression cap are further sealed by an O-ring.

　　The quick-connect assembly for pipelines comprises a wire retaining ring, an elastic toothed ring, an anti-rotation sleeve, an O-ring, a loosening sleeve, and a fixing cover. The O-ring, anti-rotation sleeve, and elastic toothed ring are sequentially installed within the cavities at both ends of the ball valve; the anti-rotation sleeve has a conical inner cavity. The large end of the anti-rotation sleeve abuts against the O-ring, while its small end and the conical inner cavity abut against the elastic toothed ring, which is secured by a wire retaining ring.

　　Under the action of force, the pipe deforms, with the inner end being compressed, while simultaneously preventing the fluid medium from leaking into the external environment.

　　This quick-connect ball valve can be rapidly coupled with pipeline valve fittings for PEX, steel, copper, polybutylene, and other types of piping. It is reusable. The quick-connect ball valve features long-lasting sealing, high-pressure resistance, high-temperature resistance, corrosion resistance, pressure resistance, extended service life, and a low coefficient of friction, making it suitable for circulating pipelines conveying media such as chemicals, strong acids, strong alkalis, and refined petroleum products.