Basic bathroom-plumbing-diagram for bathsNow, let’s move onto the bathroom-plumbing-diagram for baths. Baths are easier than showers because they are self-contained and there aren’t many places where a bath can leak. We’ll start out with a simple tub, which you install. Some have surrounds and some don’t. The bathtub plumbing fixtures will already have been installed at this point. It’s just a matter of hooking up the water supply to the correct handles and the drain waste assembly to the septic system.
The drain waste is an assembly piece that covers the drain and the overflow hole in the tub.It's important to get a really good seal here. This is a common place for plumbing leaks. It's not necessary to apply any special sealant to the assembly piece. Just try to get a tight seal.
The overflow is attached by inserting two screws through the overflow plate and the drain is secured by screwing it into the drain waste assembly to make a water tight seal. If you're using PVC fittings, you want to be careful to get a tight seal, but don't over tighten it to the point where it breaks. That's kind of the problem with plastic pipes. They need to be tight, but they are also fragile.
The faucet handles and faucet just screw into the bath plumbing assembly and the handles usually have a screw on the top to secure to the pipes in the wall. Plumbing fixtures can be really expensive if you choose the highest quality. This is a good place to practice frugality so you can keep project costs down. Try to find faucet spouts and handles at a good price. They come in a wide range according to quality and price. Shop around for the best deal.
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