The 4 Inch Liquid Control Flow Meter is a pipeline metering device specifically designed for high-volume fuel and oil transfer applications. Using precision positive displacement measurement principles, it provides real-time, high-accuracy cumulative metering of liquids flowing through pipelines. It is widely used in loading, unloading, and distribution of gasoline, diesel, kerosene, and blended fuels. Whether at refineries for bulk loading, at depots for tank truck transfer, or at airports for aircraft refueling, this flow meter helps users accurately track every drop of product, providing reliable data support for custody transfer and inventory management.
This 4 Inch Liquid Control Flow Meter operates on positive displacement principles, featuring a fluid chamber with three precision rotors—one blocking shaft and two displacement shafts—rotating in synchronization through matched gears. As liquid enters the chamber, it pushes the blocking shaft to rotate, which in turn drives the two displacement shafts, converting linear flow into precise rotational motion. The meter measures flow based on the rotation count of the blocking shaft, with signals transmitted to a counter or via pulse to a computer terminal.
In terms of accuracy, this meter delivers impressive performance—basic error within ±0.2% and repeatability error within 0.1%. The flow range spans from 170 to 1700 liters per minute, meeting the demands of high-volume loading and unloading operations. The housing is constructed from high-quality aluminum alloy, compatible with over ten categories of liquids including refined petroleum products, aviation fuels, LPG, crude oil, and solvents. Maximum working pressure is 1.0 MPa, with NPT 4-inch flange connections.
The meter can be flexibly configured with counters, strainers, and air eliminators to form a complete metering and control system. Its compact design ensures easy operation and maintenance, with a modern, streamlined appearance.
In loading and unloading operations at refineries and oil processing plants, the Liquid Control Flow Meter delivers precise measurement at high flow rates, giving businesses confidence during bulk product transfers. For tank truck and LPG road tanker transportation, the meter withstands vibration and pressure fluctuations common in mobile applications, ensuring reliable measurement throughout the journey.
In airport ground services, refueling large commercial and cargo aircraft demands both high accuracy and substantial flow capacity. The aluminum alloy construction offers excellent compatibility with aviation fuels, meeting the stringent requirements of aircraft refueling operations.
Beyond petroleum, the meter also finds applications in food and chemical industries—including liquid sugar, corn syrup, vegetable oils, as well as solvents such as methanol, toluene, and acetone. Its broad media compatibility makes it an ideal choice for facilities handling diverse product lines..
Adopting this 4 Inch Liquid Control Flow Meter gives businesses credibility in trade settlement. The high accuracy provides mutually recognized data for both buyers and sellers, effectively reducing disputes caused by measurement discrepancies.
On the operational front, the meter's maximum flow rate of 1700 liters per minute ensures efficient loading and unloading. The optional strainer and air eliminator components effectively filter impurities and separate vapors, protecting the meter's internal precision parts while safeguarding product quality.
Maintenance is straightforward—the compact, modular design simplifies routine inspection and servicing. Regular strainer cleaning and seal checks are typically sufficient to maintain long-term stable performance. The aluminum alloy housing balances lightweight construction with corrosion resistance, suitable for diverse climatic conditions and media environments..
Wenzhou Supertech Machine Co., Ltd. , as a specialized manufacturer and direct supplier of fluid measurement equipment, has long been committed to delivering high-precision, high-reliability metering solutions to customers worldwide. The Liquid Control Flow Meter we offer is a positive displacement meter specifically developed for high-volume fuel and chemical liquid measurement applications. Featuring a precision rotor metering mechanism with accuracy within ±0.2% and a flow range up to 1700 L/min, it is suitable for loading, unloading, and transfer metering of gasoline, diesel, aviation fuel, LPG, and various chemical liquids. The meter comes with NPT 4-inch flange connections and can be flexibly configured with counters, strainers, and air eliminators. The housing is constructed from high-quality aluminum alloy, combining lightweight design with excellent durability. As a direct manufacturer and supplier, we welcome inquiries regarding product selection and technical applications, and we are pleased to provide comprehensive technical support and after-sales service.
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