How to Run Copper Supply Lines
Running supply lines is a tough, but important job for a homeowner to be familiar with. While it may seem intimidating at first, with the right tools and tips, this is a job that doesn't require professional help. Follow along with our step-by-step instructions to get the job done right, the first time!
Copper is the preferred material for supply lines in most locales, although flexible or rigid plastic is permitted in some areas. Practice cutting copper pipe and sweating joints before you start.
Supply lines are usually routed so they do not cross drainpipes or vents. In most cases, it's easier to make the horizontal runs in the crawlspace or basement. Long runs and bends lower water pressure slightly.
Hammer arresters (Step 3) prevent banging noise when you turn off a faucet. Copper pipe is easily punctured or dented, so position it out of harm's way and install nailing plates to the studs to protect pipes against errant nails. Hot water is always on the left, cold water on the right.
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