The automatic air vent is a pressure safeguard in the central heating unit. They work by using a float to release accumulated air. As water flows through the heating/cooling system, a float within the automatic air vent opens or closes depending on the water level. If the system is full of water, the float will be pushed to the top and the vent will be closed until the water level drops.
This part is present in 25 different boilers in the Worcester range including the Worcester CDI 25 , CDI 30 , CDI 35 , CDI 40 , GREENSTAR 12I SYSTEM. In the next tab there is an appliance grid with links to all boilers that contain this part, Please use this if you would like to view all other spares that fit that 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.
Worcester CDI 25 COMBI
Worcester CDI 30 COMBI
Worcester CDI 35 COMBI
Worcester CDI 40 COMBI
Worcester GREENSTAR 12I FSN NG
Worcester GREENSTAR 12I FSP LPG
Worcester GREENSTAR 24I FSN NG
Worcester GREENSTAR 24I FSP LPG
Worcester GREENSTAR 24I JUNIOR
Worcester GREENSTAR 24I JUNIOR
Worcester GREENSTAR 25CDI FSN NG
Worcester GREENSTAR 25SI FSN NG
Worcester GREENSTAR 25SI FSP LPG
Worcester GREENSTAR 28I JUNIOR
Worcester GREENSTAR 28I JUNIOR
Worcester GREENSTAR 30CDI FSN NG
Worcester GREENSTAR 30CDI FSN NG
Worcester GREENSTAR 30SI FSN NG
Worcester GREENSTAR 30SI FSP LPG
Worcester GREENSTAR 35CDI FSN NG
Worcester GREENSTAR 40CDI FSN NG
Worcester BRITISH GAS 430I 30CDI FSN NG
Worcester BRITISH GAS 532I 32CDI FSN NG
Worcester BRITISH GAS 537I 37CDI FSN NG
Worcester BRITISH GAS 542I 42CDI FSN NG
Worcester GREENSTAR ERP SYSTEM 9I
Worcester GREENSTAR ERP SYSTEM 12I
Worcester GREENSTAR ERP SYSTEM 15I
Worcester GREENSTAR ERP SYSTEM 18I
Worcester GREENSTAR ERP SYSTEM 21I
Worcester GREENSTAR ERP SYSTEM 24I
Worcester GREENSTAR ERP 25I
Worcester GREENSTAR ERP 30I
Worcester GREENSTAR ERP CLASSIC 29 CDI
Worcester GREENSTAR ERP CLASSIC 29 CDI LPG
Worcester GREENSTAR ERP CLASSIC SYSTEM 30 CDI
Worcester GREENSTAR ERP CLASSIC SYSTEM 30 CDI LPG
Worcester GREENSTAR ERP CLASSIC 34 CDI
Worcester GREENSTAR ERP CLASSIC 34 CDI LPG
Worcester GREENSTAR ERP CLASSIC SYSTEM 35 CDI
Worcester GREENSTAR ERP CLASSIC SYSTEM 35 CDI LPG
Worcester GREENSTAR ERP CLASSIC 38 CDI
Worcester GREENSTAR ERP CLASSIC 38 CDI LPG
Worcester GREENSTAR ERP CLASSIC 42 CDI
Worcester GREENSTAR ERP CLASSIC 42 CDI LPG
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