How To Prevent The Control Valve From Getting Stuck Or Blocked

Cleaning method:

The most common fault: the welding slag, rust, slag, etc. in the pipeline cause blockage or jam in the throttle hole, the guiding part, and the balance hole of the lower bonnet, causing strain and scratches on the curved surface of the valve core, the guide surface, and sealing. Indentations and the like are formed on the surface. This often happens in the early stages of the new commissioning system and after the overhaul.

In this case, it must be unloaded for cleaning, remove the slag, if the sealing surface is damaged, it should be ground; at the same time, the bottom plug is opened to wash off the slag falling into the lower bonnet from the balance hole, and rinsing the pipeline. Before commissioning, let the regulating valve open completely, and making the medium flow some time before the normal operation.