Mechanical Flowmeter Mechanical Flowmeter For Pipe Size 3/4 in Connection Size 3/4 in Connection Type NPT Fluid Temp Range 35 Degrees to 105 Degrees F Wetted Materials Brass Thermoplastic Max Pressure 150 psi Flow Range 0.25 to 20 gpm Max Viscosity 31 SUS Flow Material Water Inline GPM Max 20 gpm Length 11 5/8 in Width 3 5/8 in Height 4 1/4 in Housing Material Lead Free Brass Fitting 3/4 in NPT Display 5 Digit