What is the caliber of ordinary household water meters?
Common household water meters have calibers: DN15, DN20, DN25, DN32, DN15 and DN20 are more commonly used. The caliber of the selected water meter depends on the diameter of the pipe installed at home, which is what people often say is 4 in charge Or 6 in charge. Therefore, when choosing the caliber of the water meter, you must first understand which type of pipe to install on.
The internal structure of a traditional water meter can be divided into three parts: the shell, the sleeve, and the inner core from the outside to the inside. The shell is made of cast iron, and the water passes through the lower annular space of the shell after coming out of the water inlet, which is called the "lower ring chamber" here. Above this annular space there is an "upper annular chamber" communicating with the water outlet.
Pronunciation of domestic water meter
For mechanical water meters used by households and residents, there are generally 8 indicator discs on the dial. The four red pointer indicator discs on the right side: ×0.1, ×0.01... are all indicating values less than 1 cubic meter, because the unit of measurement for tap water is "cubic meter", these discs generally have no practical guiding significance and can be omitted. Recognize. The four black pointers on the left indicate the value scale ×1, ×10...... are the basis for tap water metering and charging, and you should learn to read.