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Fit Spirotops the water level is well below the valve so tends not to suffer so much with dirty systems.
Discuss AAVs - why do they fail so much? in the Plumbing Jobs | The Job-board area at PlumbersForums.net
Same as me after a curryTakes a while to get all the air/gasses out of a sealed system
The new grant combi has 2 aavs and the ordinary boiler has a radiator type manual one on the return.I've seen recently that new Grant boilers now don't have AAV's! they have brass air "pips" like on radiators.
What I was wondering is; would it be worth keeping a few in my van so I can fit these instead of changing the AAV's for another one that is just going to leak again??
Reply to AAVs - why do they fail so much? in the Plumbing Jobs | The Job-board area at PlumbersForums.net
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