Usually, when people talk about plumbing systems, they instantly think about drainpipes and supply lines. The drain pipe is where waste and water flow out of your property and into the sewer lines. On the other hand, a water line brings the water inside your plumbing lines and fills your bathtubs, sinks, and washing machine.

Plumbing vent pipes work alongside your drain pipes, although this product does not carry water. This material helps regulate the air inside your plumbing system. It ensures waste and water flow through tubes that flow out of your house. In addition, plumbing vents also help prevent a vacuum that causes slow or no drainage.

Types of Plumbing Vent Pipes

When installing a new plumbing fixture like a sink, you need to have it adequately vented. The list below is the different types of vent pipes and where you can locate them.

  • True vent– This is a vertical pipe connected to your drain line. This vent is the most common out of all the types. Water does not run through it. Instead, it vents from the roof.
  • Common vent– Use a standard vent between two fixtures installed on opposite sides of a wall, like back-to-back sinks. This vent connects the stack with a sanitary cross.
  • Re-vent pipe or auxiliary vent– This type attaches to the drain line or behind the plumbing fixture. It runs up and over to the central vent that goes to the roof.
  • Air admittance valve (AAV)– This is a valve that opens up when draining wastewater. Air enters the valve and uses gravity to block any gases from getting into the room. Typically, these vent for more than one fixture.

Where Should You Install Your Plumbing Vents?

Your plumbing vents should be installed on the roof so that fumes evaporate away from doors, windows, and other cooling or areas where the unwanted gases could sneak into your building. Plumbers typically combine vents and pipes so that they all merge to the main vent stack. If you want easy access to your plumbing vents, make sure you also install roof access panels if inspection and maintenance are necessary.

Potential Problems from Vent Pipes

Blockages in your vent pipe can cause a build-up of negative pressure inside your drainage system. This instance means that water won’t be able to flow out of your home efficiently. Although there are many drainage issues you can fix yourself, a blocked vent is more complicated. If drainage problems are common in your drainage systems, a blocked duct might be the reason why. You should seek professional help immediately if this instance occurs. The more your lines back up with wastewater, the formation of sediments is more likely to happen. The deposits formed can lead to costly repairs if left unchecked.

Furthermore, a blocked vent can also cause gurgling sounds in your drains, standing water in sinks and tubs, and much slower drainage. More dangerous is the build-up of sewer gases. That’s recognizable by its odor. When you can’t fix these issues with a plunger, drain cleaner, or even a drill, a professional plumber will inspect your pipes, diagnose the problem and cure it.

The plumbing vent pipe is a vital material of your plumbing system, especially for your drainage system. These vents assure water and waste properly flow out of your home. But the vent pipe also keeps out odors and sewer gases. So, whenever you notice that there are issues with your plumbing vents, make sure to inspect them regularly and consult a professional plumbing company if any damages occur.