Overflowing Toilet Overflow Pipe: Causes and Effective Fixes

If the overflow pipe of the toilet continues to overflow, it will affect normal usage and adjustments need to be made in a timely manner. Let's take a look at what to do if the toilet overflow pipe keeps overflowing.

What to do if the toilet overflow pipe keeps overflowing

Turn off the water supply valve of the toilet and drain the water from the tank. Check if there are any cracks in the toilet water pipe. If there are no problems, hold the float ball up and turn on the valve to see if there is any leakage at the water inlet. If there are still no issues, the problem may be that there is debris inside the float valve or it is damaged, and repairs need to be made promptly.

Common reasons for toilet tank overflow

1、If the toilet tank's water inlet valve is not allowing water in, check if the water pressure in your home meets the requirements. If it is below the specified limit, the tank will not fill. Next, check the filter screen inside the inlet valve to see if it is blocked by debris, which would obstruct water flow. Additionally, check whether the sealing ring inside the inlet valve is loose, as well as for the presence of oil, metal shavings, or sand.

2、If the tank is full of water, but the inlet valve seems to function, check whether the water pressure is below 0.05Mpa or above 0.8Mpa. Also, check if the float in the tank can operate normally without being stuck. Furthermore, inspect the sealing ring inside the valve body to see if it is obstructed by any debris; if there is, clean out the debris and check if it can function properly.

3、When the flush button is pressed, the drain valve allows water to flow, but it stops immediately after being released. In this case, check the chain of the drain valve inside the toilet. If it is too short or too long, it will affect the operation. Also, check if the hole in the delay cup is designed too long.

In summary：we have discussed what to do if the toilet overflow pipe continues to overflow, as well as common reasons for toilet tank overflow. It is important to check for the source of any overflow and perform necessary repairs promptly to ensure normal use.