... ,automatic flow meter, automatic meter PD flow meter with counter, sensor, strainer, air eliminator ModelM-40-1M-50-1M-50H-1M ... ±0.2% Repeatability≤0.05% Standard MeasurementUnit Liter / US Gallon/IMP Gallon Meter BodyAluminum,Cast Iron available Seal & GasketBuna"N";Viton ... Flanged,NPT,BSPT,Slip Weld available Viscosity30SSU~1,500,000SSU sensor meter,automatic flow meter, automatic meter