When the water is cut off, the water in the toilet will flow backwards. Have you noticed?

Under normal circumstances, there is no backflow. However, this situation may only occur when the water is cut off, the quality of the water inlet valve of the toilet tank is poor, or it is damaged.

When the tap water is cut off, the pressure in the water pipe will change, and the pressure drop will form a "siphon" phenomenon, which may cause the water in the toilet tank to flow back into the water pipe. If you put a blue toilet cleaning block in the toilet tank, it may cause blue water to flow out of the faucet. However, there are other conditions for backflow. The backflow of water in the toilet tank only happens when there is water in the toilet tank, and there is something wrong with the water injection valve of the toilet tank.

At present, some toilets on the market have installed valves at the water inlet to prevent backflow. Theoretically speaking, when any equipment is damaged, the toilet with this valve should be carefully observed when using. If the tap water is found to flow backwards, the toilet should be repaired in time. There are many brands of toilets in the market, and their working principles are basically the same, but their internal structures are not the same, so it cannot be denied that some toilets will have unreasonable design and backflow.

Generally, before the water is cut off, the water supply company will release a message, and some property companies will also post notices in the community to inform citizens who are worried about backflow that they can close the water supply valve of the toilet tank when the water is cut off. First, the toilet should be repaired in time after it is damaged to prevent the water in the toilet tank from flowing backwards; The second is to avoid wasting water resources.