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Our rotary vane wheel liquid-sealed water meter (Model: LXSY-15E~50E) is a high-reliability multi-jet flow measurement solution, engineered for residential, commercial and light industrial water metering applications. As a flagship product from a professional Chinese manufacturer with 42,600 square meters of production capacity and 1.5 million units annual output, this meter complies fully with ISO 4064 Class B standards, delivering stable, long-lasting accuracy for bulk purchasers, infrastructure developers, general contractors and municipal water utility operators. Available in diameters from DN15 to DN50 (½” – 2”), this multi-jet liquid-sealed water meter supports both cold water (≤30℃ standard, ≤50℃ for cold water models) and hot water (≤90℃) applications. It offers flexible material options, including nickel-plated brass and cast iron bodies, with a choice of full liquid-sealed or half liquid-sealed dial configurations to adapt to diverse working environments. We support large-volume wholesale orders, as well as end-to-end OEM/ODM customization to align with your project specifications and brand requirements.
The core advantage of our full liquid-sealed water meter is its innovative dial sealing structure, which fully or partially immerses the counting mechanism in non-freezing liquid. This design completely prevents water fogging, dust, scale and impurities from entering the dial, ensuring crystal-clear, accurate reading even after 10+ years of continuous use in humid, dusty or harsh environments. This eliminates frequent dial cleaning and maintenance, drastically reducing long-term operational costs for property managers and utility operators.
Unlike single-jet designs, this multi-jet rotary vane wheel water meter uses a multi-channel water inlet structure, which creates uniform, balanced water flow around the impeller. This reduces impeller wear, minimizes measurement deviation caused by flow fluctuations, and maintains consistent accuracy throughout the meter’s service life. It meets ISO 4064 Class B requirements, with an indicating error of ±2% in the high flow zone and ±5% in the low flow zone, ensuring reliable billing and measurement for both low and high flow scenarios.
With a diameter range covering DN15 to DN50, this ISO 4064 compliant liquid-sealed water meter offers far wider application adaptability than small-caliber single-jet models. It supports both threaded and flange connections, with optional brass or cast iron bodies to balance corrosion resistance and project budget. The standardized interface ensures excellent interchangeability, making it suitable for both new construction projects and old meter retrofitting, with fast installation and minimal downtime for bulk rollouts.
MAIN TECHNICAL DATA
Meter size Dia DN (mm) | Class | Qs Overload Flow | Qp Nominal Flow | Qt Transitional Flow | Qmin Min Flow | Min Reading Lectura | Max Reading Lectura |
m3/h | 1/h | m3 | |||||
15 | A | 3 | 1.5 | 150 | 60 | 0.0001 | 99999 |
B | 120 | 30 | |||||
20 | A | 5 | 2.5 | 250 | 100 | 0.0001 | 99999 |
B | 200 | 50 | |||||
25 | A | 7 | 3.5 | 350 | 140 | 0.0001 | 99999 |
B | 280 | 70 | |||||
32 | A | 12 | 6 | 600 | 240 | 0.0001 | 99999 |
B | 480 | 120 | |||||
40 | A | 20 | 10 | 1000 | 400 | 0.001 | 99999 |
B | 800 | 200 | |||||
50 | A | 30 | 15 | 4500 | 1200 | 0.001 | 99999 |
B | 3000 | 450 | |||||
INDICATING ERROR
At low zone is ±5% from minimum flow rate (qmin) to transitional flow rate (qt) exclusive boundary
At high zone is ±2% from transitional flow rate (qt) to overload flow rate (qs)
DIMENSIONS AND WEIGHT
Meter size | L | B | H | Connecting Thread | Weight |
length | Width | Height | |||
mm | D | kg | |||
15 | 165/190 | 99 | 104 | G3/4"B | 1.5/1.6 |
20 | 190/195 | 99 | 106 | G1"B | 1.7/1.8 |
25 | 260/225 | 104 | 120 | G11/4"B | 2.6/2.4 |
32 | 260/230 | 104 | 120 | G11/2"B | 2.8/2.7 |
40 | 300/245 | 125 | 155 | G2"B | 5.4/4.5 |
50 | 300 | 125 | 155 | G21/2"B | 7.2 |
280 | 165 | 175 | Flange connecting conform to | 14 | |
This multi-jet rotary vane wheel water meter is ideal for a broad spectrum of metering scenarios, including:
High-rise residential complexes, villa communities and rental housing projects
Commercial office buildings, retail malls and catering premises
Small industrial workshops and light industrial production facilities
Municipal water supply infrastructure and utility metering projects
Large-scale old meter retrofitting and water system upgrade projects
Student dormitories, hospital auxiliary facilities and public institution buildings
Full liquid-sealed models fully immerse the entire counting mechanism in specialized liquid, delivering maximum protection against fogging, dust and corrosion, making them ideal for harsh, humid environments. Half liquid-sealed models only seal the digital counting chamber, balancing long-term readability with easier on-site maintenance, suitable for standard residential and commercial applications.
We offer two primary body material options for bulk orders: nickel-plated brass, which delivers superior corrosion resistance and extended service life for high-demand applications, and cast iron, which offers excellent cost performance for large-scale infrastructure projects with tight budget requirements.
For DN50 rotary vane wheel water meters, we offer both standard G 2 1/2''B threaded connections and flange connections conforming to GB4216.4 standards, allowing seamless integration with existing pipeline systems in commercial and light industrial settings.
Yes. For bulk purchasers and project contractors, we provide comprehensive OEM/ODM customization services, including dial branding, material configuration, connection type adjustment, and packaging customization, to fully align with your brand and project technical requirements.
