Traditional Connections for Washing Machine Plumbing
Breaking into the hot and cold supplies (and if necessary, running branch pipes) isn’t too difficult so long as you can turn off the water. The method shown uses 15mm copper pipe with compression joints.
If you take the cold supply from the rising main, don’t forget to turn off the water at the main stopcock. If the supply is fed from a storage tank, check the machine’s instructions — you may need to remove the flow inhibitor fitted on the inlet hose. In all cases, open the nearest taps to drain down the pipes before cutting into them.
1. To fit a tee, offer up the fitting and mark how much needs to be cut out of the supply pipe. Subtract 12mm (1/2") each side to allow for the joints.
2. Cut the pipe using a junior. Use an old knife or nail file to smooth off the ends, then slip on the capnuts and sealing rings (olives).
3. Slip the tee over one pipe end, then slot in the other pipe end. Slide the olives up to the tee, wrap on some PTFE tape, then tighten the capnuts.
4. Assemble branch pipes in the same way, using compression elbow fittings where you need to turn corners. Fit washing machine stoptaps at the end of the runs.
"If you find it difficult to get at a pipe with your saw, try removing the blade and refitting it the other way round — from behind the pipe.
To help cut the ends square, wrap pieces of tape around where you want to cut and use these as a guide."