08 Jan Why is It Called a Wye Fitting? Posted at 10:36h in Home Improvement by Danial 0 Comments 0 Likes Wyes are a type of pipe fitting that is Y-shaped and used to connect three pipes at once. They are named after their resemblance to the letter Y. Wyes was not always used in plumbing systems. We'll tell you why is it called a wye fitting. Read More