january 2022
december 2021
november 2021
october 2021
september 2021
august 2021
july 2021
june 2021
may 2021
april 2021
march 2021
february 2021
january 2021
december 2020
november 2020
october 2020
september 2020
august 2020
july 2020
june 2020
may 2020
april 2020
march 2020
february 2020
january 2020
december 2019
november 2019
october 2019
august 2019
june 2019
may 2019
april 2019
march 2019
february 2019
january 2019
december 2018
november 2018
october 2018
september 2018
august 2018
july 2018
april 2018
march 2018
february 2018
january 2018
december 2017
november 2017
october 2017
september 2017
august 2017
july 2017
june 2017
may 2017
april 2017
march 2017
february 2017
january 2017
december 2016
november 2016
october 2016
september 2016
august 2016
july 2016
june 2016
may 2016
april 2016
march 2016
february 2016
january 2016
december 2015
november 2015
october 2015
september 2015
august 2015
july 2015
june 2015
may 2015
april 2015
march 2015
february 2015
january 2015
december 2014
november 2014
october 2014
september 2014
august 2014
july 2014
june 2014
may 2014
april 2014
march 2014
february 2014
january 2014
december 2013
november 2013
october 2013
september 2013
august 2013
july 2013
june 2013
may 2013
april 2013
march 2013
february 2013
january 2013
april 2011

Use the automatic air vents on heat sinks.

An aid to the energy efficiency of the heating systems by using the automatic air vents.

To improve the efficiency and operation of radiators and heaters, it is necessary to have air vent valves available. They can be mainly of two types:
- Manual air vent valves: present on most long-standing radiators, they require human intervention by unscrewing a valve.
- Automatic air vent valves: the component is fully automated and does not require the intervention of an external operator.
The real problem behind the manual ones is the lack of efficiency due to delays in opening the valve. In fact, this operation is carried out only when the system becomes noisy or does not guarantee a correct heat flow. This, however, represents only the culmination of a more or less long period of malfunction and suboptimal energy yield.
With automatic air vent valves, this problem is eliminated because, as soon as the device perceives a malfunction, it works in the opposite direction aiming to resolve it almost instantly. This mechanism allows optimal operation both from the point of view of noise and from the energy point of view.

How does an automatic air vent valve work?

The fundamental components for the operation of an automatic air vent valve are essentially two:
- The float: it is necessary for the automatic reading of the water level and, when it drops below a predefined level, it moves the shutter ensuring the escape of excess air;
- The shutter: it is necessary to open and close the air vent. Subsequently, the closure takes place automatically.
Attention must be paid to the fact that, despite the valve has an automatic operation, the systems still require human intervention for maintenance, control and any fluid refilling through the appropriate tap.

The automatic air vent valves from Gnali Bocia

In addition to the two essential components mentioned above, there are a number of other functional parts to ensure an efficient and long-lasting air release over time.
- Tumbler: made of CW617N brass, excellent for corrosion resistance and with good mechanical properties;
- Lid: made of Hostaform, a type of polyoxymethylene (POM),  a material that resists well both at different temperatures and friction and wear;
- Float and moving parts: made of PP, a very common thermoplastic semi-crystalline polymer that has remarkable chemical resistance properties;
- Sealing gasket: made of "anti-sticking" elastomeric material;
- Springs: made of stainless steel.
In addition, to increase the finish, a nickel-plated surface treatment may be necessary which guarantees excellent resistance properties to aggressive environments and fluids, such as the water conveyed in the system. The maximum guaranteed temperatures are around 100 ° C while the maximum pressures are 10 bar.


See also
27/11/2019 Air vent valves even for boilers Automatic air vent valves for removing the gases that accumulate in systems and which can block them

27/07/2017 Radiators and air vent valves, the perfect couple Automatic air vent valves for radiators eliminate air without any manual intervention

27/01/2018 Air vent valve controlled by a float With a float system the air vent valve eliminates the gas accumulations in the systems

27/06/2017 You don't need an operator, all you need are some air vent valves Using air vent valves to stop air and gas from accumulating in your system is important for optimal system performance

27/08/2016 Use of air vent valves in solar panel systems Air vent valves both in a normal and a compact version for direct assembly on radiators

I contenuti di questo sito non hanno carattere di periodicità e non rappresentano 'prodotto editoriale'.