When getting quotes for a boiler replacement, we've been recommended to install a mains booster pump (e.g., Salamander HomeBoost). We live in a 3rd story UK flat and currently get a dismal 5 l/min flow rate, so the prospect of improving our flow rate/pressure is an appealing one, but I'm struggling to understand how a pump can increase the flow of water arriving to our flat in the first place. Is anyone able to explain the mechanism by which these systems work to somehow draw more water from the incoming system?
Thanks very much for any help!
Best Answer
The assumption is that there is a restriction in the pipe and higher pressure differential across that restriction will lead to more flow.
If the restriction is downstream from the pump (a semi clogged valve for example) the operation is obvious.
If the restriction is upstream then the pump will draw a partial vacuum between it and the restriction which will increase pressure difference across the restriction up to some limit.