Hi everyone, I am looking for advice as under my kitchen sink their are two pipes, the cold water feed and hot water feed, the hot water feed has a check valve/NRV fitted on the copper pipe (I am not sure which kind of valve it is but it has an arrow on it) but the cold water feed pipe doesn't have a check valve (NRV) but just a stopcock.
Do I need a check valve on the cold water feed as well and if so is it better to have check valves or non return valves installed?
Any info would be great thanks
(I have a combi boiler and the water which comes into my top floor flat is all via the mains)
Do I need a check valve on the cold water feed as well and if so is it better to have check valves or non return valves installed?
Any info would be great thanks
(I have a combi boiler and the water which comes into my top floor flat is all via the mains)