Automatic Radiator De-Airer, 1/2",1 piece Westfalia

At last! These de-airers work fully automatically; you no longer need to bleed each radiator. The valve continually and automatically de-airs water-bearing systems such as radiators, pipes, boilers, underfloor heating distributors, etc. No more moving of furniture, dirty water on carpets and walls, dismantling radiator covers, etc. The automatic valve simply replaces the existing valve. The high-quality valves work reliably, do not require maintenance and are extremely durable. Save yourself time, energy and money. * No more need to bleed radiators! * Fully automatic! * Low maintenance * Energy-saving * Saves time