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.

Water meter check valve, also known as check valve or one-way check valve, is an automatic valve installed near the water meter to prevent water flow from reversing. The water meter check valve can ensure that water in the pipeline can only flow in one direction, effectively preventing the backflow of water flow. By preventing backflow of water flow, the water meter check valve can reduce the self rotation phenomenon caused by the reverse flow of water flow, thereby ensuring the accuracy of water meter measurement. Preventing backflow of water flow can also prevent damage to pipeline equipment caused by reverse impact of water flow, extending the service life of the equipment.