Assured Automation WM-PC Series Plastic Water Meter 1" WATER METER  Body is constructed of reinforced plastic. Couplings included, horizontal installation. CORROSION-RESISTANT  All parts in contact with water are constructed of corrosion-resistant materials. ACCURATE - NSF 61 Certified, Flow Rate 3-50 GPM (will measure as low as 0.75gpm). EASY TO CLEAN - Extra filter at the inlet of the meter body permits cleaning without having to open the meter. LONG LIFE  Impeller is the only moving part in contact with water, giving the meter long life and reliable operation.