An overflow tube is a vertical tube inside the tank of a toilet. It’s purpose is to move water into the bowl in the case where the ballcock malfunctions to prevents water in the tank from overflowing.

Why does the refill tube go into the overflow tube?

1 water goes to the overflow tube thru the refill hose to refill the toilet after flushing , this is to keep sewer gas from entering the room and to prepare for the next flush.

Does the refill tube have to go into the overflow tube?





Most importantly, the refill tube must always stay above the overflow tube, otherwise the water will flow backwards and keep the tube full.

Where does the refill tube go in the toilet tank?

The Overflow Tube empties directly into the toilet bowl. This water raises the water level in (refills) the bowl. If it weren’t for the Refill Tube there would be only a small amount of water in the bottom of the bowl. The Refill Tube must be located above the Overflow Tube.

How does refill tube work?

The filler valve (or refill valve) sends water in two directions. Some of the water goes down the refill tube and starts refilling the tank. The rest goes through the bowl refill tube, and down the overflow tube into the bowl. This refills the bowl slowly.

What is an overflow pipe?

What is an overflow pipe? An overflow pipe leads from a water storage tank or cistern inside your home to the outside. They’re a vital part of your home’s plumbing system.

Why does my fill valve keeps running?





A chain that’s too short or tangled won’t allow the flapper to close and water will continue to leak into the bowl. This causes the fill valve to cycle on and off to refill the tank. A chain that’s too long, or a flush rod that hits the tank lid, won’t open the flapper wide enough to stay open for the full flush.

How do you adjust a toilet overflow tube?

Turn an adjustment screw located on the top of the valve. To raise the water level, turn the adjustment screw clockwise; to lower the water level, turn the screw counterclockwise.