It is an accessory that makes the air produced in heat systems for the radiator. This product prevents air collection in radiators and increases the performance of the heating system. The weather provides more effective radiators, reduces energy consumption and increases heat efficiency. These air, usually produced from high quality materials, usually made of Latun or stainless steel, are long-lived and reliable. Easy to use for a long time without requiring easy installation and repair. Can be easily used in your home and commercial facilities.