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Discuss Arrow flow of water on valve query in the UK Plumbing Forum | Plumbing Advice area at PlumbersForums.net

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Hi everyone,

I have a question about what happens when the incoming mains water valve with the arrow on it has water flowing backwards rather than forwards. For example the arrow on the water stop valve is pointing left but the water coming in is going right instead of left, would this pose as a health concern at all?

Thank you for any information
 
No just might cause some noise and not recommend
 

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