International Plumbing Code Section 608 it all about back flow prevention. This section details how piping, fixtures, appliances and equipment should be installed to avoid contamination or pollution of potable water systems. It includes details on which backflow preventers to use for back siphonage and back pressure situations.

In this video Plumber-Tom explains this section in detail and provides an understanding for the use of backflow preventers.

This video is based on the 2021 International Plumbing Code, so chapter 6 might look a little different than previous or later versions of the code. Generally, the code requirements do not change much from one edition to the next.

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