Is there a water supply pipe inserted inside the siphon toilet overflow pipe?

I am a professional master who installs sanitary ware.According to my years of installation,more than percent of the water is in

Summary. If the toilet mouth has not been used for a long time, it is clean, there is no water, and the main valve is closed, but it is not closed tightly, it is recommended to use a handle (or electrostatic rotary rod pliers) to check around the water valve and water tank before opening the main valve to see if there are signs of water leakage. If a leak is found, it indicates that there is water in the tank; In addition, a water film inspector can also be used to detect leaks in the water tank and permeable pipe to avoid accidents. >>>More

The small water hose of the inlet valve is to supplement the water in the toilet trap, which will not suck the water in the toilet tank, and the water in the water tank will be reduced.

This white water pipe is a water replenishment pipe, and generally siphon toilets need to be replenished. When the toilet tank is filled with water, the white water pipe is flowing all the time, but when the water level in the tank reaches the set position, the water pipe should not come out again.

Disassemble the connecting rod on the top for cleaning.