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October 08, 2020

What is a Plumbing Vent and What Does It Do? | JWS Nashville, Tennessee

Posted in: Industry News

Have you ever heard of a plumbing vent? If you have, do you know what they do and why they are important? Today we will tell you a little about what this piece of your plumbing system does and why. There is more to a plumbing vent and how it benefits your entire system then just allowing for sewage gases to escape from your home instead of entering into your bathrooms and living areas. The major function of a plumbing vent is to allow the drains in your home to flow freely by bringing air into the drains and equalizing the pressure inside those pipes. Think of the difference of flow when you sip liquid through a straw and plug the end with your thumb instead of keeping the straw opening clear.

Located throughout your plumbing system, devices called P-Traps can be found at the base of major plumbing utilities like sinks, toilets, and showers. The P-Traps are primarily used for trapping the sewage gases from entering into the home. These pipes are designed to branch off of the main plumbing vent so that, when water from other utilities in the home are flushed out, the water in the P-Traps are not pulled out and eliminated along with it by way of suction. Instead, the air from outside the home is drawn into the vent behind the eliminating water in place of the air inside the home that can be gotten through the P-Traps.

Just like drains in your plumbing utilities can become clogged, so can your plumbing vent. If this happens, your drains can begin to drain much more slowly. This is commonly dismissed as a drain blockage issue, when in fact if the problem lies in the plumbing vent, your attempts to unclog your drain will not help your situation. Your toilets and other drains may begin to gurgle, or sewage smells may begin to fill up your bathroom or other living areas connected to a bathroom.

If your home is experiencing any of these symptoms, give us a call at Jack Ward & Sons Plumbing Co. today at (615) 227-2811 and schedule a free evaluation.


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