By calculation formula of CV value, we calculate the correct CV to choose the suitable valve caliber. In the situation of the same flow, smaller valve diameter has a faster fluid speed, and will cause more serious erosion on spool and seal. If in the range of the opening can be adjusted freely, increasing valve diameter can reduce wear.
In order to protect the valve seat sealing surface and the cutting surface, we can transfer the destroyed to a secondary position. Ceramic ball valve where suffer the most serious erosion,the fastest flow of a fluid is below the imported parts. Now the ceramic ball valve is mainly used three type structure, we can invert the ball core, a ball core can be used for four times at the entrance, so the life of the valve can be prolonged by 4 times.
Ceramic ball valve adopts three type structure, has two seat, double sealing. When selecting ceramic to adjust valve should choose the sloping design, the valve can reduce the impact of fluid, thereby prolonging the service life.
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