◆Overview: The water meter is the meter that is used to meter the total volume of cold (hot) water in the tape water fully charged closed pipe.
◆Performance characteristics:
☆Multiple flow velocity, wide metering range, high metering precision, small startup flow rate, convenient reading.
☆The meter is vertical and can be installed on a vertical pipeline.
☆It uses a high-quality corrosion-resistant movement that can ensure stable and reliable performance and long service life. Strong commonality of the meter ensures convenient replacement and repair.
☆The shell materials of the water meter include copper, gray iron, nodular cast iron other several materials.
※Based on order requirements, the model 15-20 cold and hot water meters with stainless steel meter housing can be provided without affecting flow errors.
◆Working conditions:
☆Water pressure：No more than 1．0MPa（10bar）
☆Water temperature: Cold water meter 0．1℃～50℃ Hot water meter 0．1℃～90℃
◆Indication Error：
a.The maximum permissible error in the low zone from the minimum flow inclusive to transitional flow exclusive is ±5%.
b.The maximum permissible error in the high zone from transitional flow inclusive to overload flow inclusive is ±2%, and is ±3% for a hot water meter.
◆SPECIFICAT ION AND OVERALL DIMENSIONS
|
Description
|
Nominal size
|
Overload flow
（Q4）
|
Common flow
(Q3)
|
Transitional flow
(Q2)
|
Minimum flow
(Q1)
|
Min
|
Max
|
L1
|
L
|
H
|
B
|
D
|
d
|
|
Unit
|
mm
|
Inch
|
m³/h
|
m³/h
|
L/h
|
L/h
|
L
|
m³
|
mm
|
Inch
|
|
Main parameter
|
15
|
1/2
|
3.125
|
2.5
|
50
|
31.3
|
0.05
|
9999
|
96
|
191
|
107
|
142
|
G3/4B
|
R1/2
|
|
20
|
3/4
|
5
|
4
|
80
|
50
|
0.05
|
9999
|
100
|
205
|
109.5
|
157
|
G1B
|
R3/4
|
|
25
|
1
|
7.875
|
6.3
|
126
|
78.8
|
0.05
|
9999
|
110
|
230
|
120
|
174
|
G1-1/4B
|
R1
|
◆EXTERNAL DIMENSIONS
Notes：The product conforms to the requirements of the national standard of the People’s Republic of China-Meters for GB／T778．~12007《 Cold Potable Water and Hot Water》 and the specification requirements of JJG162 National Metrological Verification Regulation of the People’s Republic of China-2009《Cold Water Meter》.
