The automatic air release valves (AAV) automatically eliminate the air that can build up inside a heating system. The presence of air inside sealed heating systems can result in negative adversities that will affect the correct function and performance of the system.

The valve installation uses a PTM system (O-Ring seal), which allows a quick and safe installation without the need for additional sealing materials like hemp or PTFE tape. The valve is supplied with a non-return/check valve to facilitate removal for servicing without draining the system.