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As you might expect, the toilet is one of the most common areas we service at Whipple Plumbing. Whether it’s a clogged toilet or issues with flushing mechanisms, our plumbing services include comprehensive solutions for any toilet problems.

Do you know how a toilet works? Many people know that the toilet has two main parts, the tank and the bowl, but most of us don’t really know how the operations take place beyond this. Let’s look at the major parts in a modern toilet bowl, and how they work.

Bowl Parts

The bowl has no moving parts, but it has several important features nonetheless. They include:

  • Bowl: The lower, bowl-shaped portion of the toilet.
  • Rim holes: Openings around the edge through which water refills into the bowl.
  • Jet hole: An opening near the bottom of some bowls to increase flushing pressure and decrease clogging risk.
  • Outlet: The opening at the bottom of the bowl that leads to the trap.
  • Trap: Plumbing immediately behind the bowl that curves downward and then upward to hold a constant pool of water.
  • Siphon tube: Plumbing just beyond the trap that angles downward. It remains empty between flushes.
  • Sewer pipe: The plumbing line that connects to the bottom of the toilet – where waste and water flows when you flush the toilet.

Siphon

When a toilet flushes, it’s using a siphon or vacuum to do so. When you press the handle, all water in the tank rushes into the bowl through the rim holes and jet hole in about three seconds. This sends water through the outlet and trap and into the siphon tube quickly enough to create a vacuum, which sucks water down out of the bowl and into the pipe. As soon as the tank empties, air fills the siphon tube – that’s the gurgling sound you’re used to hearing a few seconds after a flush.

Refill

When the fill valve turns on water to refill the tank, some of this refills the bowl also. A small, flexible hose running through the overflow tube delivers water to the rim holes, which refill the bowl. Due to the curvature of the trap, which remains at the precise height the water should be in the bowl, it’s impossible for the fill valve to overfill an unclogged toilet bowl.

Want to learn more about the toilet bowl, or interested in any of our plumbing services? Contact the pros at Whipple Plumbing today.

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