Automatic Air Vents are used to release trapped air as it collects. They are not a substitute for bleeding a system manually when it is first filled during commissioning, nor for remedial bleeding if the system becomes choked with trapped air. In those cases, individual bleed screws on each radiator, or high pipe run, are opened manually.
The valves are installed at a high point of the system, where trapped air collects. They may be installed at the highest point in a system, but in a system with pumped circulation this is rarely necessary. Instead they are placed at some local high point, such as the highest point within a utility cupboard or boiler room, even though this is in a basement. Most domestic gas boilers often include such a valve within the boiler casing itself.
This part is present 45 different boilers in the Alpha range including the Alpha CB50, CB50 LPG, CD18S, CD18S LPG.
At the bottom of the page is an appliance table with the links to all boilers that contain this part. Please use this if you would like to view all other spares that fit that model by clicking on your appliance model and download the user manual for that appliance. If none of these models match the appliance you have, please contact us before ordering so we can confirm this part is compatible.
We recommend that all parts are fitted by a fully qualified Gas Safe Registered Engineer. If you require any help locating a part, please feel free to contact us.
|Manufacturer||Appliance Model||GC Number|
|Alpha||HE CB25 LPG|
|Alpha||HE CB33 LPG|
Alpha 1.010771 Automatic Air Vent
|Part Type||Air Vents / Air Valves - Auto / Manual|