I. Preparation before installation
① The pipelines before and after the Special Material Valve are ready. The front and rear pipelines should be coaxial, and the two flange sealing surfaces should be parallel. The pipeline should be able to bear the weight of the Special Material Valve, otherwise the pipeline must be equipped with appropriate support.
② Blow clean the pipelines before and after the valve to remove oil, welding slag and all other impurities in the pipeline.
③ Check the mark of the Special Material Valve to make sure that the Special Material Valve is intact. Open and close the valve several times to confirm that it is working properly.
④ Remove the protective parts on the connecting flanges at both ends of the Special Material Valve.
⑤ Check the valve hole to remove any possible dirt, and then clean the valve hole. Even tiny particles of foreign matter between the valve seat and the ball may damage the valve seat sealing surface.
II. Installation
① Install the valve on the pipeline.
Either end of the Special Material Valve can be installed at the upstream end. The valve driven by the handle can be installed at any position on the pipeline. However, the Special Material Valve with a gearbox or pneumatic drive should be installed upright, that is, installed on a horizontal pipeline, and the drive device is above the pipeline.
② Install a gasket between the valve flange and the pipeline flange according to the pipeline design requirements.
③ The bolts on the flange need to be tightened symmetrically, step by step, and evenly.
④ Connect the pneumatic pipeline (when using a pneumatic drive).
III. Inspection after installation
① Operate the drive to open and close the Special Material Valve several times. It should be flexible and smooth, confirming that it works normally.
② Check the sealing performance of the flange joint surface between the pipeline and the Special Material Valve according to the pipeline design requirements.
