产品名称（Product Name）：Rotary vane vertical semi-liquid seal water meter
主要技术参数（Main technical parameters）：
1.1 Maximum allowable working pressure: equal to 1.0MPa.
1.2 Maximum allowable working temperature: 30℃ for cold water meter and 90℃ for hot water meter.
1.3 Metering characteristics:
1.3.1 Level 2 water meter (accuracy level is level 2)
Within the water temperature range of 0.1℃ to 30℃, the maximum allowable error of the water meter is ±2% in the high zone (Q2≤Q≤Q4) and ±5% in the low zone (Q1≤Q＜Q2). When the water temperature exceeds 30℃, the maximum allowable error of the water meter in the high zone is ±3%, and the low zone is still ±5%.
主要机械参数（Main mechanical parameters）：
Nominal caliber DN(mm) | Length mm | Breadth mm | Altitude mm | Service flow (Q3) | Demarcation flow (Q2) | Minimum flow (Q1) | Connecting thread | |
Take over | nut | |||||||
15 | 165/146* | 96 | 104/110*/100* | 2.5 | Q3/Q1=50、63、80、100、125、160 Q2/Q1=1.6
| R½ | G¾ | |
20 | 195/150* | 96 | 106/113*/100* | 4.0 | R¾ | G1 | ||
25 | 225/158* | 100 | 115/108* | 6.3 | R1 | G1¼ | ||
40 | 245 | 124 | 155 | 16 | R1½ | G2 | ||
50 | 280 | 160 | 175 | 25 | French connection press GB/T17241.6 | |||
*110 and 113 are the heights of DN15 and 20 thousand magnetic water meters respectively. *146, 150 and 158 are the lengths of DN15, 20 and 25 vertical water meters, respectively. *100, 108 are respectively 15, 20, 25 vertical water meter inlet and outlet connecting pipe height | ||||||||
