The valve core has fallen off?
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The valve core has fallen off – what’s the reason?
It is usually due to various reasons such as an insecure connection between the valve stem and the valve core, as well as vibrations of the valve body that cause it to come loose
1. Pipeline vibration； 2. Medium corrosion 3. Excessive temperature and pressure of the medium 4. Assembly defects by the manufacturer
Which valve’s spool has come loose? It would be best to have photos to help identify problems