The handwheel for RA valves is a functional radiator thermostat designed for precise control of indoor radiator temperature. Weighing only 40 grams, it is lightweight and easy to handle. The product is available in black and white, allowing it to be harmoniously integrated into various room designs. The rotary knob enables intuitive and user-friendly operation, making it easy to quickly and effortlessly set the desired temperature. This thermostat is specifically designed for use on radiators and contributes to the efficiency of heating control. It is a practical accessory that can be used in both private and commercial spaces to enhance comfort and energy efficiency. The handwheel is an essential element for anyone seeking a simple and effective solution for regulating room temperature.