A compression fitting is used to join copper pipes. You don’t need to use heat or solder, so it is good for many home plumbing jobs. If you fit it properly, it should give you a strong and watertight joint.
Get the Pipe Ready
Clean the end of the pipe with wire wool or a pipe cleaner, as this will remove dirt and help the fitting go on properly. Take some PTFE tape and wrap it around the end of the pipe as this can help make the seal even tighter. Many copper pipe fittings, such as the examples seen here //watkinspowis.co.uk/products/copper-pipe-fittings-and-press-systems/, are made from brass because it is strong and does not rust easily. Copper is also used for drinking water pipes because it is suitable for this class of plumbing.
Fit the Compression Fitting
Push the pipe into the fitting and slide the olive up against it and then screw on the nut by hand. Once it feels tight, use an adjustable spanner to make sure it is tight. Ensure you don’t tighten it too much, as you risk deforming the olive instead of squeezing it around the pipe. If this happens, take the fitting apart, add fresh PTFE tape and start again. If the pipe becomes damaged, it will need replacing.
Where They Are Used
Copper pipe fittings are used in plumbing, heating and some gas systems. They are also used on refrigeration pipes because they are quick to fit and easy to replace if changes need to be made later.
