Dear Visitors We will attend in 2014 CHINA INTERNATIONAL BEARING INDUSTRY EXHIBITION, taking place on 18 Sep, 2014 to 21 Sep, 2014, in SHANGHAI WORLD EXPO EXHIBITION & CONVENTION CENTER. Our Hall Number is: H2, Booth Number is: G128 Thanking you!     Thank you.

Deep Groove Ball Bearing

Backflow meter water meter or two-way metering

The current domestic water meter is generally a single flow of water, mostly in reverse flow (also known as the back or reverse flow) can move around and to also reduce the total number of existing institutions does not prevent the water meter Water meters seal flip function, so cause a measurement dispute and the possibility of cheating. Backflow in the table at the entrance to the installation of water meters by one-way valve can connect the meter to take over and seal with water to prevent a man-made flip-meter and the possibility of cheating. Two-way metering meter function in the reverse flow meter count is cumulative, and bodies are still in line with the requirements of measurement accuracy. Description: The current national standards for backflow meter or two-way meter does not measure the detailed requirements, only requires water meter to "withstand the unexpected amount of upstream and display this counter."