I have read that one should install double check valves where there is a chance of foul water being siphoned back into the mains supply, e.g. on a hose outlet or toilet cistern fed from the mains.
I need to install a bath directly from the mains, so does this require a DC valve or would a (single) check valve be sufficient? I am not sure about the difference as regards the law.
Many thanks.
I need to install a bath directly from the mains, so does this require a DC valve or would a (single) check valve be sufficient? I am not sure about the difference as regards the law.
Many thanks.