Installing Washing Machine Drain Pipe Vent

The fixture on the left is a washing machine drain box.

Installing washing machine drain pipe vent.

There is more plumbing vent pipe in this photo than drain piping. You only have to remember this the sanitary tee that serves each fixture is the place where the trap arm drain and vent come together. However experts propose that the best way to ensure the proper draining of the washing machine is through the installation of a standpipe. A good working vent is especially important for washing machines since they discharge so much water at one time.

If they omit the trap and vent it s a mistake that can. Trust me you don t want a short circuit on top of the whole clogged drain problem. This is a vertical pipe connected to a p trap which then connects to a drain. No vent unless mandated by building codes if there s a gap around the drain tube for the washing machine where it enters the drain you probably won t need to install a vent as there will be ample air to prevent the formation of a.

The vent may also serve as a vent to nearby fixtures. As water goes down a drain air is needed to equalize the pressure in the drain line. When hooking up a new washing machine some people look for a convenient drain line and simply install a pipe that extends to the washer. Washing machine drain vent 2 inch pipe for washing machine drain.

In some installations it may connect directly to the drain line near the trap. The same holds true for plumbing vent pipe. You can see the 2 inch drain pipe leave the box and go into a p trap. How to unclog a washing machine drain pipe first things first turn the water supply to the appliance off and also switch the power to the area off at the breaker before you attempt any repairs.

Standpipe 24 inches above p trap. In some areas you legally have to install a washing machine drain air vent but in other areas you don t. 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. The vent will usually rise straight out of the sanitary tee that the p trap is connected to.

The piping in the photo on the left represents a laundry sink drain while the photo on the right depicts a washing machine s stand pipe. A sturdy 2 inch pipe will work well as a standpipe.