The thermostat for valves is materials and is not easy to deform or damage. Good heat dissipation effect,stable,safe and reliable.Thread installation connection,simple. Suitable for M30x1.5mm/0.06inch threaded connection of radiator. The control handle with a scale,and the internal temperature can be adjusted according to your own requirements. Thermostatic Radiator Valves is designed to control the outlet temperature of the equipment by controlling inlet of the heat exchanger,air conditioning unit or other hot and cold equipment.