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Stop valve
Data:2015-07-02
    The trim part of stop valve is plug-shaped disc, seal faces shaped as plane or cone and disc along the center line of the fluid for linear motion. 
    Once the disc is opened, the valve seat is no longer contact with the sealing surface, and also has a very reliable cutting action, so sealing surface of stop valve wear less than other types of valves for longer service life.
    The valve seat and disc is easier to repair or we can replace the sealing elements without having to remove the entire valve from the pipeline, which is very applicable for welded between valve and pipeline . But the flow resistance of stop valve is higher than other valves because direction of flow is changed when media through the valve.