Seriously though i can t think of any application where in a dw vent may be terminated in an attic space.
Vent drain pipe in attic.
As water goes down a drain air is needed to equalize the pressure in the drain line.
The first would be a bathroom or kitchen in that part of the house and the other would be a.
Just as drain pipes remove water and waste from your home the plumbing vent pipe also known as a plumbing air vent removes gas and odors.
Visualizing the pipes inside your wall is made easier if you start from where you can see.
Thats pretty much a no brainier.
It also allows fresh air into the plumbing system to help water flow smoothly through the drain.
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.
Pipe it out the roof.
If the vent wall is opposite the drain line use a reducing y and a street elbow.
A plumber would probably know the answer to the vent issue but would he know or care about other associated retrofit issues.
The plumbing vent also known as a vent stack helps regulate the air pressure in your plumbing system.
If the drain lines in your home have poor venting as in figure a for example water rushing down the drains will pull water from nearby p traps.
If the vent wall is parallel to the drain pipe install a 45 degree reducing y and a street elbow to point toward the wall.
These drain pipes connect to.
Only two plumbing set ups could require sewer pipes in the attic.
The vent pipes remove or exhaust sewer gases and allow air to enter the system so that the wastewater flows freely.
If you don t have any other plumbing in the attic then the pipe running through it is the main vent stack.
Or even a better idea cap them lol.
Understanding the plumbing vent.
The same holds true for plumbing vent pipe.
You may need another elbow of any degree to position the vertical vent where you want it.
Toilet vent option 3.
It comes from the bathroom which probably is directly below and it extends.
You ve opened up the cabinets under a sink before to see the p shaped tube directly underneath the drain right.
This is the purpose of a venting system.
The vent pipes are part of the drain waste vent or dwv system of a house or building and they do not carry water inside them.
It s called the p trap and it starts the sewage ventilation process.
Local building codes that regulate the materials used in the dwv system have changed over the years so most older homes have a combination of materials.
