Sharing water supply for fridge dispenser/washing machine

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Do I need a non return valve to prevent back flow from the washing machine hose, or can I just use a standard Y piece to share the water supply?

Many thanks
 
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Do I need a non return valve to prevent back flow from the washing machine hose, or can I just use a standard Y piece to share the water supply?

Many thanks

If you mean the cold water mains, then you can just share it, there is no backflow.
 
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Standard is fine, but you may want to consider a check valve on the wm hose as the fridge is of course for drinking water.
Thank you. This is what I thought. Some people were saying it’s fine to use a standard y piece but I was concerned that water from the washing machine hose could potentially contaminate the drinking water. But not having any idea about plumbing I wasn’t sure if my logic was right
 

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