Waste Vent In Attic

The waste pipes remove water and material from the toilet.

Waste vent in attic.

Drain pipes are those connected to fixture p traps. Vent pipes look like sewer pipes. The main vent is stack is often but not always a continuation of the soil stack which is a 3 or 4 inch waste pipe that extends vertically down from the uppermost bathroom to the sewer. As the water runs down proper venting is required to avoid a vacuum from being created.

Extra info on the air admittance valve. This revert is at least six inches above the overflow line and properly connected with a drainage t. The drainpipes are made of cast iron galvanized pipe copper or plastic. In modern plumbing a drain waste vent or dwv is part of a system that allows air to enter a plumbing system to maintain proper air pressure to enable the removal of sewage and greywater from a dwelling.

The first would be a bathroom or kitchen in that part of the house and the other would be a. Only two plumbing set ups could require sewer pipes in the attic. Notice how the main vent and waste pipe remain separated behind the sink only connecting via the attached went pipe. I have a customer that we are doing some work in the attic for and i noticed yesterday that the plumbing is vented up into the attic phew and not thru the roof.

These empty into larger waste pipes that connect to the sewers. Water running through these pipes tends to create a suction behind it and that suction can be. The drain waste vent system everyone knows what drain and waste pipes are but not everyone understands the function of the vents. I see situations around like this sometimes.