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5 ways to extend the service life of ceramic valves

by:Sino Valves     2021-03-11
The ceramic valve initially adopted a two-piece structure. In order to make the valve structure more reasonable, it was changed to the commonly used three-piece structure. This structure also has the characteristics of double sealing due to its double valve seat. At the same time, when choosing a ceramic ball valve, pay attention to choosing a valve with an inclined transition design. Such a regulating valve can reduce the impact of the fluid. The following valve shares with you the way to extend the life of ceramic valves. 1. Cleaning the pipeline to extend the life of the pipeline. Welding slag, rust, solidified slag, iron wire, cloth strips, etc. in the pipeline cause blockage or jamming at the orifice and the guide part of the arc polishing machine to cause the valve core to break, which often occurs in new The system is put into operation and the initial stage of operation after overhaul. This is the most common failure. In this case, it must be disassembled and cleaned to remove the slag. If the sealing surface is damaged, it should be ground; at the same time, the bottom plug should be opened to flush the slag and the pipeline. Before putting it into operation, let the regulating valve be fully opened and allow the medium to flow for a period of time before being brought into normal operation. 2. Increase the opening to extend the service life. When starting to use the ceramic control valve, try to work at the maximum opening, such as 80%. In this way, the initial erosion and wear of impurities in the pipeline occurs outside the damaged part of the valve core. After the impurities in the pipeline are removed, the opening of the regulating valve is adjusted to a place where the normal opening is slightly larger. As the fluid damages the valve core and the flow increases, the arc polishing machine reduces the opening accordingly, so that it will continue to destroy and gradually close, so that the entire valve core is fully utilized until the root and sealing surface of the valve core are damaged and cannot be used. . 3. Increase the diameter and increase the life. We calculate the correct CV through the CV value calculation formula to select the appropriate valve diameter. In the case of the same flow rate, the smaller the valve diameter, the faster the flow rate of the fluid, and the more severe the erosion of the valve core and seals by the medium. It is recommended that the user appropriately increase the diameter of the valve within the range where the opening can be adjusted freely, so as to reduce the wear. 4. Change the structure of the arc polishing machine to increase the life. The ceramic control valve originally adopted a two-piece structure. In order to make the valve structure more reasonable, it was changed to the commonly used three-piece structure. This structure has double valve seats, so it also has Features of double sealing. At the same time, when choosing a ceramic ball valve, pay attention to choosing a valve with an inclined transition design. Such a regulating valve can reduce the impact of the fluid. Fifth, transfer the damage position to improve the service life. The severe damage is transferred to the secondary position to protect the sealing surface and throttle surface of the valve core valve seat. Generally, the erosion of ceramic ball valves is the most serious. The place where the fluid velocity is the fastest is below the fluid inlet. For the current three-piece ceramic ball valve structure, the ball core can be reversed. In this way, one ball core can be used at the inlet. Second, the life of the valve is extended by 4 times. Reasonable use of ceramic valves, maximum maintenance of them, and prolonging their service life are the primary problems in using ceramic valves.
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