What is the reason for the particularly loud hot water pump pipeline in Yangcheng 100 hotel?

1, it may be that a throttle valve is not fully opened, which makes the pressure in the pipeline relatively high, resulting in water hammer phenomenon and sound in the water supply pipeline.

2. It may be that the pipeline or any water user leaks slightly, and air enters from the leaking place, so there is air in the pipeline.

3. See if the automatic exhaust valve on the roof is broken.