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How Does a Toilet Tank Work?
July 18,2023

How Does a Toilet Tank Work?

Ever wondered how your toilet magically cleans up after you with just a press of a button or pull of a lever? Don’t worry; in this article, you’ll learn the inner workings of a toilet tank, along with its parts and the role of each part. At Mr. Rooter Plumbing, we understand the anatomy of a toilet tank inside and out.

What are the Parts of the Toilet Tank?

  • Fill Valve: It controls the water flow from your home's water supply into the tank. When you flush the toilet, the fill valve lets water in until the tank is full.
  • Float Ball: As the name implies, a float ball is a device that sits on the water's surface inside the tank. When the tank is full, the float ball tells the fill valve to stop letting water in. It's like a water level sensor.
  • Flush Valve: This is a self-closing rubber or plastic flap at the bottom of the tank. It moves the water into the bowl when activated, thereby creating the flushing action.
  • Overflow Tube: This is a vertical tube inside the toilet tank that prevents the tank from overflowing. If the fill valve doesn't stop for some reason, the excess water goes down the overflow tube and into the toilet bowl instead of flooding your bathroom floor.
  • Flush Handle: This is the part outside the tank that you press to initiate flushing action. When you press down on the handle, it lifts the flush valve (flapper), allowing the water in the tank to rush into the bowl.
  • Lift Chain: The chain connects the flush handle to the flush valve (flapper). It pulls the chain when the handle is depressed, lifting the flapper and starting the flush.
  • Refill Tube: This is a small, flexible tube that is responsible for refilling the bowl with water after a flush.

How Does A Toilet Flush System Work?

A flush begins with pushing down the flush handle, which then lifts the chain attached to a rubber flapper at the bottom of the tank. When the rubber flapper is lifted, it breaks the seal between the water in the tank and the bowl. This allows the water from the tank to rush down into the toilet bowl. The water carries away all the waste and everything you want to flush.

After the flush, the refill tube directs some water from the tank into the overflow pipe, which fills up the bowl again with clean water. The rubber flapper goes back down and seals the tank, stopping any more water from going into the bowl. The drop in water level inside the toilet tank is sensed by the float ball, which then triggers the fill valve to refill the tank. As the tank water rises and reaches a certain level, the float ball tells the fill valve to stop the water flow.

Having Toilet Trouble and Need an Expert Plumber? Call Mr. Rooter Plumbing Today

While there are a few toilet problems that you can fix yourself, there are more complicated issues that need the expertise of an experienced plumber. If you’re experiencing toilet problems that are beyond your skill level, reach out to a trusted plumbing service for professional toilet repair. Here at Mr. Rooter Plumbing, we are the go-to plumbing service for all of your toilet repair needs. Our plumbers have seen and fixed it all when it comes to toilet problems.