Question: What causes flow noise in a circulator?


Flow noise is caused by the friction of the medium at bottlenecks in the pipe network, e.g. at the valve openings of thermostat valves. This can be remedied by reducing pump output.

In order to ensure even, low-noise heat distribution without oversupply or undersupply to any pipe trains or consumers, hydraulic balancing of the pipe network is required.

Additional information:

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