Through the stack sewer gases are carried up to the roof through vent lines.
Drain vents in attic.
It helps maintain proper atmospheric pressure in a building s waste system and channels the exhaust gasses to the vent.
The typical vent system consists of a network of pipes that connect to every drain p trap and extend via a main stack that pokes through the roof just above the main bathroom.
A full sized vent is a primary vent where the drain line transitions at some point and becomes the vent pipe that exits the roof.
It also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes however no water runs through the plumbing vent pipe.
This is best implemented if a fixture rests close to the stack and the top floor of your home allowing the stack to serve as a vent.
True vents also have no water running through them.
In many an older home this drain pipe is perhaps 4 inches in diameter and stays that size all the way through the roof.
Vent pipes look like sewer pipes only two plumbing set ups could require sewer pipes in the attic.
The plumbing vent pipe is a vertical pipe that attaches to the drain line and runs through the roof of a home.
Part of routine maintenance would be clearing any debris from in and around the pipe.
The first would be a bathroom or kitchen in that part of the house and the other would be a.
The true vent is aligned vertically and attaches to your drain line through the roof.
The plumbing vent also known as a vent stack helps regulate the air pressure in your plumbing system.
The pipe leading to the main roof vent is called the vent stack.
Your home or office s plumbing systems are composed of both drainage and vent systems that work together to remove water and waste.
Drain pipes take the wastewater to the soil stack.
For one reason or another it may be impractical or impossible to construct this main vent through the roof so it s usually permissible to extend it from another part of the house.
When you think of clogged plumbing blockages in drain pipes are probably the first issue that comes to mind.
All the faucets and water appliances in a house use this same system of drains pipes and vents.
But there s another part of your plumbing system that can become blocked.
Really you should be running a drain auger in your vent as a part of routine home maintenance.