Flowmeter Liquid GPM Max 40 Max Pressure (PSI) 50 Connection Size (in) 1 NPT Max Temp (F) 130 Length (in) 27-1/2 Width (in) 19 Height (in) 20-1/2 Housing Material Aluminum Fitting Brass Chamber Material Polypropylene Seal Material Buna N Flow Range 6 to 40 gpm Display Mechanical Resetable Cumulative Totalizer 9999 Gallons Max Viscosity 50 SSU Max Viscosity (SSU) 50 For Pipe Size 1 in