Floor Drain With Vent

Today houses are vented through the roof.

Floor drain with vent.

A true vent is a vertical pipe attached to a drain line that travels through the roof with no water running through it. Through the stack sewer gases are carried up to the roof through vent lines. This is the purpose of a venting system. Vents are a major component in a home s drainage system.

Venting allows water to pass out of the drains easily. True vents also have no water running through them. If you must run drainpipes across a floor carefully calculate the amount of vertical space available. 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.

All the faucets and water appliances in a house use this same system of drains pipes and vents. The same holds true for plumbing vent pipe. You must slope the drainpipe at 1 8 to 1 4 inch drop per. As water goes down a drain air is needed to equalize the pressure in the drain line.

It may be possible to simplify supply runs by moving a vent pipe over a few inches. The true vent is aligned vertically and attaches to your drain line through the roof. 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. Drain and vent lines must be positioned precisely so you should install them before the supply pipes.

The re vent or revent pipe is routed upwards above the fixture and then horizontally over to a tee that attaches it to the main stack vent pipe. A re vent or revent pipe in a plumbing drain waste vent or dwv system is an auxiliary vent that is attached to the drain pipe close to an individual plumbing fixture.