The same holds true for plumbing vent pipe. Re vent pipes otherwise known as auxiliary vents attach to the drain line near your fixture as they run upwards and over the main vent.

Toilet Vent Stack Diagram With Images Plumbing Vent Plumbing

Vents are a major component in a home s drainage system.

Plumbing vents and drains. This is the purpose of a venting system. Drain and vent lines must be positioned precisely so you should install them before the supply pipes. Today houses are vented through the roof.

It may be possible to simplify supply runs by moving a vent pipe over a few inches. As water goes down a drain air is needed to equalize the pressure in the drain line. Through the stack sewer gases are carried up to the roof through vent lines.

If you must run drainpipes across a floor carefully calculate the amount of vertical space available. All the faucets and water appliances in a house use this same system of drains pipes and vents. Venting allows water to pass out of the drains easily.

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. They can attach right behind your fixture or horizontally to the drain line. 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. You must slope the drainpipe at 1 8 to 1 4 inch drop per foot. Drain pipes take the wastewater to the soil stack.

Roof flashing made from heavy grade rubber lead or sheet metal holds the vent pipe in place.