The water meter check valve can effectively prevent water backflow, thereby avoiding the water meter from idling due to water flow backflow and ensuring the accuracy of measurement. In addition, it can also reduce the frequency of water meter rotation, effectively solving the problem of water meter rotation caused by pressure fluctuations. When the pressure inside the water pipe increases and the water is compressed, the water meter will rotate in the positive direction; When the pressure drops, the check valve closes and the water meter does not rotate. Therefore, as long as the pressure does not exceed the pressure setting of the check valve, the water meter will not rotate again, greatly controlling the frequency of rotation of the water meter.

For household users, the water supply system is relatively simple, so installing it behind the water meter may be more practical. This can effectively prevent the backflow of water from the user end into the public water supply system, protecting the safety of the public water supply system. In some special cases, such as when there may be water backflow in old pipeline systems, or when the water quality at the user end in some high-rise buildings may affect the overall water supply system, installing check valves is particularly important. At this point, a suitable installation location can be selected based on the actual situation to ensure the safety and stability of the water supply system.