I'm installing a new sink mixer on an unbalanced (mains cold and tank hot) system. Can anyone advise whether I use single or double check valves - in fact in what circumstances would you use single and doubles? Many thanks.
You may have problems with your mixer taps if the supply is unbalanced.
May need a pressure reducing valve on your cold or you may get a cheap fix by fitting an isolating valve to your cold supply and turn it down a bit.
See how you get on and post back
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local