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The working principle of a smart water meter valve
As society continues to advance and technology keeps evolving, valves serve as the controllers for water meters. Therefore, gaining a better understanding of valves can help us grasp water meters more effectively.
The valves currently available on the market include: solenoid pilot valves, motor-driven pilot valves, and motor-driven ball valves.
Electromagnetic pilot valve: The opening and closing of the valve is controlled by a magnetic drive that operates via a moving rod to relieve pressure.

Ball valve: A valve in which the stem is driven by manual, electric, hydraulic, or pneumatic actuation. The ball, connected to the stem, rotates around the valve’s axis. Compared with other types of valves, it features rapid opening, smooth and reliable operation, and wide-ranging applications. However, its manufacturing process is complex, and its technical parameters are highly stringent.
Flat butterfly valve: The closing element is a disc. It features low cost, energy efficiency, ease of operation and flexibility, and convenient installation. However, it has strict requirements for temperature and pressure and offers relatively poor sealing performance.
The above are several types of valves commonly found in the market.
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.”