How do you do the plumbing for a washer and a dryer?

Answer 1

You need to have at least four (4) pipes coming and going to a typical washer/dryer service... maybe 5. To the washer: 1) hot water, 2) cold water, 3) effluent pipe. To the dryer: 1) a gas pipe if it's a gas dryer, 2) not really Plumbing, as such, but you need a hot air exhaust vent for a dryer that vents outside the house. It can vent through the wall or through the floor.

The ends of the pipes for the hot & cold water service should be fitted with faucet valves to turn the water on and off. The faucet valves are threaded for the special connector hoses that that go from the faucets to the washer. You can get ready-made washer connector hoses at a hardware store. When you connect the connector hoses, make sure they're tight and don't leak - at either end.

The effluent pipe is usually an open 1 1/2 or 2 inch black pipe with a p-trap on it. It's usually already in the wall. If it's not, you'll have to run a sewer drain pipe to your service area. Sometimes it could be ABS plastic. The p-trap has to be on it or you'll get sewer stink in your laundry service area... and it's code. The effluent hose on the washer usually has an end shaped like a hook. The hook end is inserted in the end of the open effluent pipe in the wall. There's nothing to connect or tighten.

The gas service for the dryer has its own connection. It's a special flexible metal tubing that connects to an off/on valve at the end of the gas pipe. In all these pipe connections, you'd be well advised to us Teflon tape on the threaded ends. It fills the irregular spaces in cast plumbing parts and assures a better seal.