3/4 inch BSP plastic Y piece / splitter.
Use this fiting to connect two appliances to one valve.
Also useful if you only have a cold supply and your older washing machine needs hot and cold water supplies.
We also keep a heavy duty brass version in our store.
Can be used for dishwashers, washing machines and American style fridges.
This is the standard thread size used for dishwashers and washing machine hoses.
Have a quick look at the BSPT section at the bottom of this page for information on pipe thread sizes.