Before repairing or replacing the Manual Ball Valve, the operator must ensure that the system has been completely shut down and the pressure in the pipeline has been completely released. There may be high pressure or residual media in the pipeline that has not been emptied. If the operation is not done properly during the repair process, it is very easy to cause leakage or splashing accidents. Therefore, it is very important to implement effective pressure relief and emptying measures to ensure that there is no residual media and gas in the pipeline. At the same time, the operator should pay close attention to the changes in pipeline temperature, especially when dealing with steam, high temperature or chemical media, and must wear appropriate protective equipment such as protective gloves and protective glasses to prevent burns or chemical damage.
During the repair and replacement process, the operator needs to carefully check the external and internal status of the Manual Ball Valve. First, the appearance of the valve needs to be fully inspected to confirm whether the valve body has cracks, corrosion or other obvious damage. If there are cracks or signs of corrosion on the valve shell, it means that the valve has reached the end of its service life or has been damaged under harsh working conditions and needs to be replaced immediately. When conducting an internal inspection, focus on whether the sealing surface between the ball and the valve seat is intact, check whether the ball has scratches, wear or corrosion, and ensure that the sealing surface is flat. If the sealing performance is found to be degraded or the sealing surface is severely worn, the relevant parts should be replaced in time to ensure the normal operation of the valve.
The sealing performance of the Manual Ball Valve is one of its most critical performance indicators, so it is crucial to check the wear of the seal ring and the valve seat. Commonly used sealing materials include high-performance materials such as polytetrafluoroethylene (PTFE) and reinforced polytetrafluoroethylene (RPTFE). These materials are prone to aging, hardening or loss of elasticity when used in high temperature, high pressure or corrosive media environments. When the seal fails, it may still cause leakage even if the valve appearance is intact. Therefore, the damaged seal must be replaced to ensure that the new seal has a good fit with the valve body and ball to maintain excellent sealing performance.
When repairing or replacing the Manual Ball Valve, the lubrication of the valve should not be ignored. Lubricants are usually required at the connection between the valve stem and the valve body to reduce the friction coefficient during operation, reduce wear and ensure smooth opening and closing operations. With the extension of the use time, the lubricant may lose its effectiveness, resulting in difficult operation or valve jamming. Therefore, regularly checking the state of the lubricating grease and adding or replacing the lubricant as needed are necessary steps to ensure the long-term stable operation of the valve.
When disassembling and replacing the Manual Ball Valve, the operator must strictly follow the technical manual and operating specifications provided by the manufacturer to avoid damage to important parts such as the valve body, ball, and seals during the disassembly process. When disassembling, pay attention to the operation sequence and avoid applying excessive force or using improper tools. Especially when handling the connection between the valve stem and the handle, be careful to prevent damage caused by excessive twisting. For large valves or valves with more complex structures, it is recommended to use auxiliary tools to ensure the safe disassembly and replacement of valve components.
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