Social responsibility
Contact Us
Hotline:
After-sales installation:
Product inquiry purchase:
After-sales maintenance:
Address: Social responsibility
What should be noted when using small-caliber water meters?
What should we pay attention to when using small-caliber water meters? Below, we’ve listed several key points you need to be aware of.
1. When selecting the caliber of a smart water meter, pay attention to the diameter of the pipe at the installation location and choose a meter with an appropriate caliber based on the magnitude of the flow rate.
2. The location for installing the water meter should be chosen in a place that is convenient for removal and meter reading, and it should be protected against exposure to sunlight and freezing temperatures. Additionally, an oil valve should be installed upstream of the water meter to allow for water shut-off during meter removal and installation.

3. If the liquid inside the pipeline is corrosive or at a high temperature, it may cause deformation of the meter’s internal mechanism; therefore, this water meter should not be used.
4. Smart water meters cannot be installed vertically (except for vertical water meters that are installed horizontally—where the dial should face upward and the arrow on the meter casing should point in the same direction as the water flow).
5. Smart water meters are precision measuring devices. During use, care should be taken to avoid applying strong external forces to the meter body. Users must not tamper with or damage the lead seals or disassemble internal components on their own. If you suspect that the meter reading is significantly inaccurate, please report it to the relevant authorities for inspection.
Longzhida Company Successfully Hosted the Victory Parade Commemorating the War of Resistance.
Longzhida Company Successfully Hosted the Victory Parade Commemorating the War of Resistance.
Today is a day that every Chinese person should solemnly remember—the 80th anniversary of the victory of the Chinese People’s War of Resistance Against Japanese Aggression and the World Anti-Fascist War.
On July 2, Chengde Longzhida Company held a meeting with the Sino-German Institute. After thorough discussions between the two sides, Mr. Bai, General Manager of Longzhida Company, and the faculty team from the Sino-German Institute reached a consensus: Longzhida Company officially entrusted the Sino-German Institute to carry out the design and R&D work for a new type of ultrasonic water meter.
On May 30, Longzhida Company successfully held an exceptionally meaningful event titled “Welcoming the Eighth ‘National Science and Technology Workers’ Day’: Promoting the Spirit of Scientists.”