... ,anti-alkaline,anti-impurity high reliability and durability competitive price glue flow meter with good quality,flowmeterRXDC differential intelligent flow ... ultrasonic, mass, volumetric, vane-wheel, by-pass, orifice, differential pressure flow meter. It was widely used in fields of gas, ... is >200, upside-down horizontal installation must be used for the instrument. For the purpose of design, ...