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Selection of Valve Electric Actuator Models

Selection of Valve Electric Actuator Models

Sep 26,2022

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Notes on the Ball Valves Installation


In the past, we have shared the performance, principle, structure and classification of ball valves to help our customers achieve better model selection. In addition, the ball valves installation is also a very important and delicate matter. In this issue, MSTN will provide you with a better analysis from before and after the ball valve installation to avoid unnecessary trouble and loss.


1. Preliminary preparation for ball valves installation


⑴ Proper supports should be equipped on the front and rear pipelines of the ball valve, or the front and rear pipelines should be coaxial, and the sealing surfaces of the two flanges should be parallel. The piping should be able to bear the weight of the ball valve.


⑵ Purge the front and rear pipelines of the ball valve to remove the oil stains, welding slag and all other impurities in the pipelines.


⑶ Check the mark of the ball valve to find out that the ball valve is intact. Fully open and close the valve several times to confirm that it is working properly.


⑷ Remove the protective parts on the connecting flanges at both ends of the ball valve.


⑸ Check the valve hole to remove possible dirt, and then clean the valve hole. Even small foreign objects between the valve seat and the ball may damage the valve seat sealing surface.


2. During the ball valves installation


⑴ Install the valve on the pipeline. Either end of the valve can be installed at the upstream end. The valve driven by the handle can be installed at any position on the pipeline. However, ball valves with gearboxes or pneumatic drives should be installed upright, that is, on a horizontal pipeline with the drive device above the pipeline.


⑵ Seal gaskets are installed between valve flange and pipeline flange according to pipeline design requirements.


⑶ The bolts on the flange should be tightened symmetrically, successively and evenly.


⑷ Connect the pneumatic pipeline (when pneumatic driver is used).


3. Routine inspection after the ball valves installation


⑴ Operate the driver to open and close the ball valve several times. It should be flexible and free of stagnation to confirm that it is working properly.


⑵ Check the sealing performance of the flange joint surface between the pipeline and the HUAGANG ball valve according to the pipeline design requirements.


The above is the related matters before and after the ball valve installation. Of course, they can be carried out when the pipeline medium and the on-site environment are taken into account. The application field, technical indicators, and manufacturing technique of ball valves are also a kind of knowledge, and we will focus on explaining the key points of knowledge in this field in the later period.


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