We have traditional or thermostatic radiator valves available from Altecnic, Honeywell, Drayton and Instinct.
Traditional or manual radiator valves work like taps controlling the flow rate of hot water into the radiator directly by physically turning the heating up and down at the radiator. Manual valves are constantly open so you will have to adjust the valves frequently until the output from the radiator heats the room to the desired temperature. (TRV’s) have a built in temperature sensor which can maintain a constant room temperature.
The thermostatic valve does this by automatically adjusting the input valve controlling the flow rate of hot water into the radiator and so controlling the radiators output. As the thermostatic valve works automatically it ensures the radiator runs as efficiently as possible making sure energy is not wasted by overheating a room and therefore is also environmentally friendly.