TRV's are used to give you greater control of room temperatures by automatically closing when heat is not required, with the lockshield valve being used to balance the heating system. Both valves can be used to isolate the radiator
Programmes: Manually adjustable temperature range of 7°c - 28°c
Box Includes Trv & Lockshield Valve
Positive off on trv to prevent accidental operation when radiator is removed