Hello,
Do I need to put a check valve on the cold feed of a bathroom basin mixer tap if it's on a Combo boiler and the tap is dual flow as opposed to a single flow where the water is mixed in the body which I understand should have a cv?
Cheers
Do I need to put a check valve on the cold feed of a bathroom basin mixer tap if it's on a Combo boiler and the tap is dual flow as opposed to a single flow where the water is mixed in the body which I understand should have a cv?
Cheers
