Assured Automation WM-NLC Series Lead Free Brass Water Meter 1" with Pulse Output Lead Free Residential Water Meter Totalizer Measuring in Gallons NPT Threaded, Flow Rate 3-50 GPM (will measure as low as 0.75 gpm) +/- 1.5% accurate in flow range, NSF 61 Annex G Certified Couplings Included, Horizontal Installation