Thread Content
The opening and closing of valves are often determined by the position of the handle; when the handle is parallel to the pipeline, it opens the valve, while in a vertical position it closes it. However, the connection between the handle and the valve stem of a standard ball valve is straight and rectangular, which makes it easy for incorrect connections between them to lead to accidental operation of the valve. To prevent such accidents, it is necessary to check the position of the handle when opening or closing it; the valve should be opened with the handle parallel to the pipeline and closed with it perpendicular to the pipeline. However, in ordinary ball valves, the connection between the handle and the valve stem is straight and rectangular; due to incorrect connections between the handle and the valve stem, it is easy to cause accidental operation of the valve. In floating ball valves, where the connection between the handle and the valve stem is also straight and rectangular, there is no risk of incorrect connections, thus preventing accidental operation. 2. The locking mechanism allows the manual ball valve to be locked in the fully open or fully closed position, preventing unauthorized personnel from operating the handle and causing accidental valve actions. It also helps to prevent valve opening or closing due to pipeline vibrations or other unforeseen factors, thus avoiding accidents. It is particularly suitable for use in pipelines handling explosive oils, chemicals, etc., as well as in field piping applications, where it offers enhanced effectiveness. 3. The anti-flight valve sleeve ball valve is designed to prevent the valve stem from flying out of the valve due to abnormally high pressure. The lower part of the valve stem is mounted on a shoulder; this not only helps to prevent fires and damage to the sealing disk at the base of the valve stem, thereby avoiding leaks, but also a thrust bearing is installed at the point where the lower part of the valve stem contacts the valve body, creating an inverted sealing seat that prevents leaks and expansion-related issues. Under internal pressure, the valve stem could otherwise fly out, leading to overflows and accidents, and even exacerbating the severity of such incidents – something that safety requirements do not permit. 4. Anti-static motors enable the ball valve to float, preventing static electricity from arising due to friction between the ball valve, the valve stem, TFE, or RPPL; such static electricity can lead to spark formation and accidents under certain operating conditions. Conductive springs are installed between the valve stem, the ball, and the valve stem to guide static electricity through the pipeline, thereby ensuring the safety of the system. 5. Leak-free valve body sealing structure: The connection between the valve body and the side valve body is sealed using gaskets. Fire, high-temperature vibrations, opening of the valve, and uneven torque can all cause external leaks. In addition to being sealed by gaskets, ball valves feature a design that takes into account the valve body and the metal side surface of the valve, enabling a metal-based seal that ensures no leaks.