How to Identify PVC Pipes and Fittings | Ask This Old House

Ask This Old House plumbing and heating expert Richard Trethewey gives a tutorial on the types of PVC pipes and fittings. (See below for a shopping list and steps.)
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Shopping List for How to Identify PVC Pipes and Fittings:
- PVC pipes and fittings

Steps for How to Identify PVC Pipes and Fittings:
1. Richard explains that for drainage in the U.S., we typically use white PVC pipes (and occasionally black ABS pipes). They come in a variety of sizes, ranging from 1/2-inch to 5-inch.
2. Richard says the standard for joining two PVC pipes is a coupling for a straight fitting.
3. However, if angles come into play, you’ll choose from several different degrees including 22, 45, 60, and 90.
4. When fitting three pipes together, plumbers usually use a tee. Sometimes a wye fitting is needed.
5. Use a double tee to connect multiple sinks to the same drainpipe. There’s also a double wye fitting which is comparable to the double tee.
6. All of these fittings and pipes can be found at the home center or a plumbing supply store.

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Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Identify PVC Pipes and Fittings | Ask This Old House
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