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Product details
Product Usage
A compound water meter, commonly known as a mother child meter, is used to record the total amount of cold water flowing through the tap water pipeline. It consists of a large-diameter disassembled spiral wing water meter, a small-diameter rotary wing water meter, and a flow conversion device.
Usage conditions
Temperature level: T30
Water pressure level: MAP 16
Pressure loss level: △ P 63
Indication error limit:
From the low zone including the minimum flow rate (Q1) to excluding the boundary flow rate (Q2) ± 5%
From the high zone including boundary flow (Q2) to the high zone including overload flow (Q4) ± 2%
Product Features
Novel structure and easy maintenance; Wide measurement range; The initial flow rate is small, making it very suitable for non continuous high flow water supply pipelines.
The liquid sealed water meter counter adopts a special liquid packaging, which can maintain clear readings for a long time.
The dry water meter adopts magnetic transmission, and the counter adopts vacuum packaging, which can maintain clear readings for a long time.
technical parameter
| Diameter DNmm | Measurement range Q3/Q1 | Overload flow Q4 | Common traffic Q3 | Boundary flow Q2 | Minimum flow Q1 | Start flow rate | Minimum reading | Maximum reading | |
| m3/h | 1/h | m3 | |||||||
| 80 | 1600 | 78.75 | 63 | 0.064 | 0.04 | 16 | 99+99999 | ||
| 100 | 1600 | 125 | 100 | 0.064 | 0.04 | 16 | Liquid seal: 999999+99999 | ||
| 150 | 1600 | 200 | 160 | 0.256 | 0.16 | 60 | 9999999+99999 | ||
Flow error curve
Pressure loss curve
External dimensions and weight
| model | Nominal diameter | Long L | High H | High Q | Width B | Flange connection shall be in accordance with GB4216.4 "10 bar gray cast iron pipe flange dimensions" | weight | ||
| (mm) | |||||||||
| mm | Outer diameter of flange D mm | Bolt center circle diameter D1 outer diameter D | Number of connecting bolts (only) | ||||||
| LXLGY-80 | 80 | 370 | 276 | 400 | 310 | 200 | 160 | 8xM16 | 27.5 |
| LXLGY-100 | 100 | 370 | 286 | 400 | 320 | 220 | 180 | 8xM16 | 33 |
| LXGY-150 | 150 | 500 | 345 | 500 | 445 | 285 | 240 | 8xM20 | 64 |
Note: According to the specifications of GB4216.4-84 (10 bar gray cast iron pipe flange size) for flange connections, special specification orders are required.
The height G is necessary for disassembling the measuring mechanism.
| model | Open traffic Q × 2 | Turn off traffic Q × 1 |
| m3/h | ||
| LXLGY-80 | 1.8 | 0.7 |
| LXLGY-100 | 2.1 | 1.2 |
| LXLGY-150 | 6 | 4.2 |
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