Repairing Hot Tub Plastic Compression Fittings

Cracking Rings

• Plastic compression fittings can be tightened too carelessly. When this happens, the compression ring can start to split and crack, losing any tightening and waterproofing abilities that it once had. If you are using the compression ring on plastic piping, sometimes the ring may crack the pipes it is binding together. You will need to replace a cracked compression ring entirely to avoid future leaking problems.

Matching Materials for Expansion and Contraction

• Be careful when installing plastic fittings on pipes that aren't plastic. While plastic fittings are designed to be used with other types of piping, like copper, they don't always play well together. High and low temperatures will cause metal and plastic to expand at different rates. The result can be a loose fitting or a cracked fitting which does not do its job. A consistent problem may indicate the need to switch to different piping or compression materials.

Leaks

• Even when installed correctly, leaks can occur through compression fittings. This is often the result of a compression fitting being bumped or jostled while you are tightening it. In this case, the fix can be a simple one. If there are no signs of damage, replace and re-tighten your compression fitting, and then start using your hot tub again, keeping an eye on the compression fitting to see if leaks re-emerge.

Old Fittings and General Repairs

• In time, plastic compression fittings will wear out and need to be replaced. When you need to repair or replace one of the fittings, remember to keep the pipes steady while you are tightening the ring. Plastic compression fittings are not designed to be used with welds or piping compounds, but if the fitting does not seem to be working, you might want to switch to a traditional joint with some sealing compound for a more permanent solution.