sensor meter,automatic flow meter, automatic meter sensor meter,automatic flow meter, automatic meter PD flow meter with counter, sensor, strainer, air eliminator ModelM-40 ... 0.05% Standard MeasurementUnit Liter / US Gallon/IMP Gallon Meter BodyAluminum,Cast Iron available Seal & GasketBuna"N";Viton;Teflon ... Weld available Viscosity30SSU~1,500,000SSU sensor meter,automatic flow meter, automatic meter