The regulating valve sometimes gets clogged, so how can we avoid this situation from happening?

(1) Cleaning method

Welding slag, rust, slag, etc. in the pipeline can cause blockage or jamming in the throttle port, guide part, and balance hole of the lower valve cover, resulting in scratches and abrasions on the valve core surface and guide surface, as well as pressure marks on the sealing surface. This often occurs during the initial operation of newly put into operation systems and after major repairs. This is the most common malfunction. In this case, it must be disassembled for cleaning to remove debris. If the sealing surface is damaged, it should also be ground; At the same time, open the bottom plug to flush out the debris that falls into the lower valve cover from the balance hole and flush the pipeline. Before putting into operation, fully open the regulating valve and allow the medium to flow for a period of time before resuming normal operation. (2) When using ordinary valves to regulate media that are prone to sedimentation and contain solid particles, the external flushing method often causes blockages at the throttle and guide points. External flushing gas and steam can be applied at the bottom plug of the lower valve cover. When the valve is blocked or stuck, open the external gas or steam valve to complete the flushing work without moving the regulating valve, so that the valve can operate normally.