Tecno-Varia with bubble-breaker, automatic vent valve with cover in plastic and anti-dirt air chamber.

The air that normally forms inside a heating system must be promptly eliminated to avoid:
- corrosive phenomena
- reduced thermal output and hydraulic efficiency
- localised overheating
- noise due to the passage of air bubbles
- risk of circulating pump faults

- Tecno-Varia air vent valves allow the complete, automatic evacuation of the air, but in the patented version, thanks to the additional manual vent, it is also possible to:
- check the regular operation of the valve
- more rapidly evacuate the air in certain situations (e.g. system filling)

Construction
- Cover in Zytel (HTN51)
- Cup in UNI EN 12165 CW617N brass
- Black cap for manual vent in reinforced PA 6
- Grey cap for automatic vent in reinforced PA 6
- Float in PP
- Rod in PA 6
- Ring nut in PPO
- Spring in stainless steel
- Shutter in silicone rubber
- O-Ring in NBR
- Bubble-breaker in reinforced PA 6
- Gasket in NBR

Technical data
- Thread as per UNI EN ISO 228-1
- Maximum pressure: 10 bar
- Maximum temperature: +110°C