Connecting Pipes

Pipe fittings, also known as pipe connectors, attach one pipe to another in order to lengthen the run or change the flow direction in a plumbing system. These are used to combine, divert or reduce the flow of the water supply, and they come in a variety of sizes to fit the pipe they will connect. 

Pipe fittings dimensions are important and there are sizing standards to follow. While most have openings of the same size on each end, some fittings are designed with different-sized openings and serve as the transition from one size pipe to another.

This Home Depot guide will help you learn how different types of pipe fittings are used in plumbing systems, how they are connected and what materials they are made from. Ready to find the supplies you need in your local store? Use The Home Depot app to locate products and check inventory. We'll take you to the exact aisle and bay.