26 Mar 2016

It’s not always easy to point out the place of concern or issue when it comes to the plumbing of your home. If you’re having to make some plumbing repairs within your home, it’s always useful to know a little bit about how the draining system works: drain-waste-vent system.

The larger pipes within your home make up the DWV system that carries the wastewater to a city sewer line or to your private sewer treatment facility which is better known as the septic tank. You will hear of people having septic problems, and typically derives from the back yard of the home (and smells too).

So, the process of the DWV works with the drainpipes collecting the water from your sinks, showers, tubs, and various appliances in your home. The waste pipes will then remove the water and material from the toilet. Next, the vent pipes or sewer gases will allow the air to enter the system in order for the wastewater to flow freely.

Various drainpipes are made from cast iron, copper, plastic or sometimes galvanized pipe. Many older homes will have a combination of pipes that accommodate the DWV system.

Your sinks in your bathroom and kitchen can reflect a great diagram of how the system works. The DWV system is referred to as the plumbing tree because it looks like a tree from top to bottom.

  • First the water runs down the sink drain into a p-trap that fills up with water. The water eliminates and prevents sewer gases and odors to leak into your home through the pipes. When the water runs through with even more water, the piping and water is getting replenished.
  • Next, there is a drainpipe that is attached to the p-trap through the wall.
  • Behind the scenes is what is happening behind the wall now. A vent line and drainpipe lead to a soil stack that controls the center of the wastewater system. The importance of the drainpipes is that they take the wastewater to the soil stack and carried up to the roof through the vent lines (sewer gases).

Whether it’s your sink, toilet or shower running water, the DWV is used throughout the entire home. It’s the most important aspect to your home because it eliminates the waste that is lying in the pipes and the drains.

If you’re experiencing plumbing issues, leaks or draining problems, please contact us today for a FREE inspection and estimate.

You own a lot of pipes and lines, so let us help maintain and take care of them!

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