The Ferro ZTD30BL manual thermostatic head is ideal for use on radiators and gives you the flexibility to control the temperature in your space. By installing this head in place of the old conventional head, you can adjust the flow of hot water, ensuring the perfect temperature you desire. When you install a head on each radiator, you'll have full autonomy in each room, adjusting the heating according to your needs and contributing to fuel savings. Its operation is simple—just turn the head and select from the 5 available temperature settings to suit your room's conditions.