Oct 19, 2018 - 07:38 AM
It should be just as effective at any flow rate. This HydroFlow HS38 sends a harmless signal of 150kHz throughout plumbing pipes made of any material. The pipe, and/or the water inside of it, acts as a conduit which allows the signal to propagate. So as long as there is water inside of the pipes, it will be doing its job.