And they can catch your valuables like wedding rings, necklaces or other small prized belongings. They can also trap debris and prevent clogs. P-Traps are a modern invention to hold a small amount of water that prevents sewer gases from infiltrating your home. Traps are serving every drain in your house’s plumbing system. So, a clogged plumbing vent is a serious matter. Plumbing vents allow fresh air and let smell and sewer gasses out of your plumbing, stopping your home from smelling bad due to everything flowing through your pipes and sewer line.

They cause a foul odour, but they can also be dangerous. This build-up of gases can include methane, hydrogen sulphide, nitrogen oxides, sulphur dioxide, ammonia, etc. It’s common for such gases to flow from the sewer system into your home. A plumbing vent system removes sewer gases, allowing them to escape and providing an entry point for fresh and clean air into the sewer system. Clean drain pipes can only do their job when the vent pipe works.Ģ. It prevents a vacuum that causes slow or no drainage.Įach plumbing fixture in your home requires air to move the water through the drainage pipes. It regulates the airflow in your plumbing system, ensuring waste and water flow through your drain pipes that drain out of your house. The plumbing vent helps regulate the air pressure within the plumbing system. A plumbing air vent is a vertical pipe that generally goes through your home’s roof, providing an entry point for air and an exit for odours and gas and helping ventilate drainage systems.Ī venting system has two primary purposes:ġ. Plumbing systems are actually comprised of a drainage system and a ventilation system. Your plumbing vent system does not deal with water, even though it is part of a plumbing system. Plumbing vents are also referred to as vent stacks or plumbing air vents.

Toilet vent stack