Selection Points Of Cold Water Meter

I. First consider the working environment of the water meter: such as water temperature, working pressure, working time, measurement range and water quality, etc. to select the water meter, and then determine according to the design flow through the water meter so that the pressure loss of the water meter is close to or does not exceed the specified value. Water meter caliber. In general, when the nominal diameter is not greater than DN50, a rotor-type water meter should be used; when the nominal diameter is greater than DN50, a screw-wing water meter should be used; when the flow rate of the water meter changes greatly, a double-type water meter should be used.
II. The water meter with a nominal diameter not greater than DN50 should be selected according to the designed second flow rate of the water supply system.
III. Dry water meters should be preferred. In non-heating areas, and when the minimum temperature is lower than -4°C, dry-type water meters should be used for household water meters in indoor public parts or water meters adjacent to external walls. If a wet water meter is used, heat preservation should be done.