PVC pipe is extremely rigid, but this technique allows you to bend PVC pipe at angles up to 90 degrees without kinking. By Timothy Dahl Published: May 24, 2016 8:03 AM EDT.

Insulated pipe chimneys should not exceed 20 feet in length. This length should be reduced by 10 percent for every 90-degree bend and 5 percent for every 45-degree bend in the run.

This video demonstrates how easy the process is, and even shows you how to make multiple bends in the same pipe. The pipe used in this example 3/4", so we'd be curious to see how well this trick ...