hi guys,
im installing a thermostatic shower (combi boiler system) do i need to install check valves,i know this has to be done with electric showers/instananous,do check valves have to be fitted to cold/hot to prevent backflow contamination
thanks
clive
im installing a thermostatic shower (combi boiler system) do i need to install check valves,i know this has to be done with electric showers/instananous,do check valves have to be fitted to cold/hot to prevent backflow contamination
thanks
clive