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The Rotary Vane Wheel Dry Dial Cold Water Meter LXSG-15E2~50E2 is a high-precision, multi-jet water meter engineered for stable and accurate cold water flow measurement, manufactured by Ningbo Zhiyitong Energy Technology Co., Ltd., a leading high-tech enterprise specializing in R&D, production, and distribution of flow measurement solutions. Designed with a premium dry dial structure and solid brass body, this meter series covers DN15 to DN50 (½” – 2”) diameters, fully compliant with ISO 4064 Class B international standards. It is tailored to meet the rigorous demands of commercial purchasers, property developers, and water supply operators, delivering long-term reliable performance with minimal maintenance requirements.
This multi-jet dry dial cold water meter adheres strictly to ISO 4064 Class B accuracy standards, ensuring consistent and compliant measurement across all flow ranges. It features a ±2% error margin in the high flow zone (from transitional flow qt to overload flow qs) and a ±5% error margin in the low flow zone (from minimum flow qmin to transitional flow qt), eliminating under- or over-measurement risks for water billing and management.
Crafted with a high-grade brass body, the ISO 4064 Class B water meter offers exceptional resistance to rust, corrosion, and water hammer, extending its service life even in long-term continuous operation. It also provides flexible configuration options, including dry-dial, wet-dial, and liquid-sealed designs, to adapt to diverse installation environments and usage requirements.
With standardized dimensions and universal connecting threads, the brass body residential water meter delivers excellent interchangeability, fitting seamlessly into existing pipeline systems without complex modification. Its user-friendly structure simplifies installation, inspection, and maintenance, significantly reducing labor and operational costs for property management and maintenance service providers.
This meter maintains stable operation at a working pressure of up to 1.0Mpa, with a maximum water temperature of 50℃ for cold water measurement. It supports a wide measuring range, with a minimum reading of 0.0001m³ for small diameters and a maximum reading of 99999m³, catering to both daily residential and light commercial water usage monitoring.
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 | |
WORKING CONDITION
Water temperature：≤50℃ for cold water meter
Water temperature：≤90℃ for hot water meter
Working pressure：≤1.0Mpa
The DN15 to DN50 cold water meter is ideal for business clients across multiple sectors, including:
Residential property development and apartment complex construction
Municipal water supply utilities and water resource management departments
Commercial building management for office parks, shopping malls, and hotels
Wholesale water meter distributors and regional equipment suppliers
Property maintenance and facility management service providers
This meter series fully meets the requirements of ISO 4064 Class B international accuracy standards, ensuring compliant and reliable measurement for commercial billing and water management.
The meter body is crafted from high-quality brass, which provides excellent corrosion resistance, pressure resistance, and long service life for long-term water immersion applications.
We offer this cold water meter in DN15, DN20, DN25, DN32, DN40, and DN50 diameters, covering ½” to 2” pipeline specifications to meet diverse project needs.
This series is primarily designed for cold water measurement (≤50℃). We also offer optional configurations for hot water applications up to 90℃, which can be customized based on your project requirements.
