Plumbing Basics: How Compression Fittings REALLY Work on Copper Pipe! Stop Doing It Wrong! The Correct Way to Use Compression Fittings on Copper Compression Fittings Explained: Copper Pipe Joining Like a Pro Plumber Are you joining copper pipes with compression fittings incorrectly? You're not alone! In this video, a plumber shows you the wrong way (PTFE on the thread!) and the right way to get a secure, leak-free connection. Learn how the olive works and common mistakes to avoid. #CompressionFi