Self cut plumbing in saddle valve / tap for washing machines.
Valve cuts into standard 15mm copper pipe, * without the need to drain down.
* Facts applying to every self-cut valve, no matter where sourced : We recommended that the water supply to the pipe you are breaking into be turned off while you are installing the valve as in a very few odd exceptions the valve might fail to cut or to seal correctly. Failures can be caused by many reasons including incorrect fixing, unsuitable application or indeed valve failure.
It will only work on bare unpainted pristine standard 15mm table X British copper.
Threaded connection is 3/4 inch BSP (see BSPT link at bottom of page for info on thread sizes).