Countermeasures for Control Valve Blockage or Stuck
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Release Time：2017-09-04
Due to the principle of medium, the valve will occasionally be blocked or stuck in the process of use, and cannot operate normally. To avoid this problem, Wuhan Xiete Valve Technology Co., Ltd. has taken countermeasures and summarized the following methods for your reference only: rust, welding slag, slag, etc. in the pipeline of 1. cleaning method will cause blockage or jam in the hole of each part of the valve, cause the valve core, guide surface, sealing surface to produce indentation, deformation, etc., which is the most common fault. When this happens, the device should be removed in time for cleaning, and the dirt should be cleaned; if the sealing surface is damaged, it should be ground; at the same time, the bottom plug should be removed.
Due to the principle of mediumRegulating valveIn the process of use, the valve will occasionally be blocked or stuck and cannot operate normally. To avoid this problem,Wuhan Xiete Valve Technology Co., Ltd.To take measures to deal with it, summed up the following methods for your reference only:
Rust in the pipeline, welding slag, slag, etc. cause blockage or jam in the hole of each part of the valve, resulting in indentation and deformation on the valve core, guide surface and sealing surface, which is the most common fault. When this happens, the device should be removed in time for cleaning and the dirt should be cleaned. If the sealing surface is damaged, grinding should be carried out. At the same time, the bottom plug should be opened to flow out the slag falling into the lower valve cover from the hole and flush the pipeline.
For small diameter or small flow control valve, the medium can not have a little slag. In this case, a filter should be installed on the pipeline before the valve to ensure the smooth flow of the medium.
3. method of increasing throttle clearance
If the solid particles in the medium or the washed-out welding slag rust flow in the pipeline do not leave the orifice and cause blockage or jamming and other faults, the throttling member with large throttling gap can be selected.
When the medium of the regulating valve is easy to precipitate and contains solid particles to cause the valve to be blocked, the gas and steam shall be washed out externally at the bottom plug of the lower valve cover and opened, and the flushing shall be completed under the condition of not moving the regulating valve to make the valve run normally.
Using the scouring force of the medium itself, it takes away the substances that are easy to precipitate and block when scouring, thereby improving the anti-blocking function of the valve.
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