A Flowmeter measures the actual flow of water through your recirculation system. These meters are calibrated to the size of your piping - e.g. if you have 1 1/2 piping you would purchase a 1 1/2 inch Flowmeter; for 2" piping, a 2-inch Flowmeter, etc. This 1 1/2" Flowmeter will measure between 20-75 Gallons Per Minute (GPM). This guide shows you how to install a Flowmeter on the discharge side of a 1 1/2" pipe system.
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