All plumbing fixtures—including washing machines—must be vented. Improperly vented drains can be sluggish and noisy, and can emit hazardous fumes. Properly vented drains allow the P-trap to do its job: prevent sewer gases from escaping into your home.

Will a drain work without a vent?

A vent is a necessary part of the drain system for any plumbing fixture. Without venting, the negative pressure caused by the flow of draining water can potentially suck water out of the drain trap and allow sewer gases to enter the home. The vents allow air into the drain pipes to help keep the drain flowing properly.

What are the requirements for a washing machine drain?

Drain and Trap Requirements A 2-inch drain pipe is required for all washing machines. The former requirement of 1 1/2-inch pipe is not enough to handle the fast drainage of modern washers. As with all plumbing fixtures and appliances, a washing machine drain pipe must also contain a P-trap.

What happens if a drain doesnt have a vent?

Poorly-vented drain lines will not be able to effectively move wastewater and solid waste out of your building. This could lead to problems such as overflowing drains, backed-up toilets, and similar plumbing issues.

Does the vent go before or after the P trap?

Plain and simple, the vent comes AFTER the trap. A vent before the trap does absolutely nothing. The open drain inlet at the bottom of the sink is the vent before the trap. It is why fixtures do not need ANY vent to drain, they need a proper drain to not siphon the trap.

Can a washer drain into a sink?

Water is drained from the washing machine directly into the sink. Smaller drain lines will not accommodate the volume of water discharged from the washer. A separate P-trap and a stand pipe must be installed to prevent water backup.

Do plumbing vents have to go through the roof?

The answer is, no, plumbing vents do not have to go through the roof. While roof stacks are the most common form of plumbing vents, you can run a plumbing vent through an exterior wall. The stipulation is that the plumbing vent has to run higher than the highest window of the house.

How far from the toilet can the vent be?

6 feet According to the UPC, the distance between your trap and the vent should be no more than 6 feet. In other words, for the vent to work properly, it needs to feed into the drain line within 6 feet of the trapways that connect to it.

Where is washing machine drain?

The drain hose is usually found on the back of the washer, along with two separate hoses for both cold and hot water supply. The drain hose carries wastewater out of the machine, while the hot and cold water supply hoses bring clean water in.

Can you put Drano down a washing machine pipe?

Can I put Drano down my washing machine drain? Yes. Drano or any drain cleaner can be used to unclog your washing machine drain, but make sure you run your washer without a load of laundry before normal use.

Why do some washers drain into a sink?

The washer will put too much water in a 1 1/2 line and you will get over flow (plus not to code). This is why the washer drains in the sink. It takes all the water from the washer, kind of like a storage area, then it will drain at its own leisure so to say on what the drain will accept.

Why does my washing machine drain into sink?

Its common for the washing machine to share a drain with a sink, and if the laundry room is near the kitchen, it could be the kitchen sink. If the sink backs up when the washing machine is draining, something is either preventing water from flowing, air from getting in or both.

How can I vent my plumbing without the roof?

You can pass the vent through a wall instead of through the roof, but it must still rise over the roof.Cut into the drain pipe you want to vent with a hacksaw. Deburr the two cut ends of the pipe with 120-grit sandpaper and glue a sanitary tee between them with plastic pipe cement.More items