Waste Vent In Attic

The waste pipes remove water and material from the toilet.

Waste vent in attic.

Only two plumbing set ups could require sewer pipes in the attic. Waste is produced at fixtures such as toilets sinks and showers. Vent pipes look like sewer pipes. The vent pipes remove or exhaust sewer gases and allow air to enter the system so that the wastewater flows freely.

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. The first would be a bathroom or kitchen in that part of the house and the other would be a. Drain pipes are those connected to fixture p traps. 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.

Extra info on the air admittance valve. 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. 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. There are 3 vents in one area and 2 in another. Notice how the main vent and waste pipe remain separated behind the sink only connecting via the attached went pipe. The drainpipes are made of cast iron galvanized pipe copper or plastic.