The HUALIU Nozzle Flowmeter is a differential-pressure flow measurement device that, combined with various differential-pressure gauges or transmitters, measures the flow of liquids, steam, gases and other fluids in pipelines. It is widely used in the petroleum, chemical, metallurgical, power and light industries. The product is available in two primary-element forms, the standard nozzle (ISA1932 nozzle) and the long-radius nozzle, both designed and manufactured in accordance with ISO5167 and GB/T2624. Owing to their high degree of standardization, they can generally be put into service without flow calibration.

Its measuring principle is that when fluid flows through the nozzle primary element a static differential pressure is created; a definite correlation exists between this differential pressure and the flow rate, from which the flow is derived. The nozzle uses an arc-shaped converging profile, giving a stable discharge coefficient and good repeatability, and can measure a wide range of liquids, gases, steam and dusty or dirty media. Compared with an orifice plate flowmeter, the nozzle has a lower permanent pressure loss, helping to save energy.

The HUALIU Nozzle Flowmeter is simple in structure and easy to install, requiring a short upstream straight run. Fully forged, the body is robust, durable, erosion-resistant and corrosion-resistant, withstanding high-temperature, high-pressure and high-velocity conditions. It is particularly suited to the flow measurement of superheated steam and high-temperature, high-pressure water in the power, chemical and related industries.