Hi I am fitting a new bath, basin and toilet and am installing isolation valves to all hot and cold water supplies.
Do i also need to fit non return valves and what is the differance between single check and double check valves.
Any advice would be appreciated and if I do need these non return valves are they all the same or can u recommend which type I should use.
Many thanks
Do i also need to fit non return valves and what is the differance between single check and double check valves.
Any advice would be appreciated and if I do need these non return valves are they all the same or can u recommend which type I should use.
Many thanks