What is this on the filling loop?

Joined
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Buckinghamshire
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This is on the filling loop of a house that has been let for 18 months and has now been vacated. It wasn't there before - I assume it's a pressure vessel to augment the internal one in the combi boiler, but I haven't seen one before and Google has let me down.

21April2010DSCF0005.jpg
 
Bleedin' typical! Fit an unauthorised component with no care for doing a proper job.

Thanks for that feedback. What's it's function, is it to extend the time between re-pressurising? If so that implies a leak somewhere. Is it worth Ebaying?
 
Thats def what it is.It may also have been fitted after the original one failed and was not removed from the boiler.Could have been neater.
 
Ah! That might explain it because it is under contract maintenance by Homeserve, and there was a breakdown not long ago. Perhaps this is what they do as a 'quick fix'? Thanks. :o
 
Yuo get what you pay for!! the repair is theoretically correct, but should have been carried out to a much higher standard :shock:
 
Double check valve should be on water main ???? look's like a flexi tap connector .
workmanship look's o.k :D
 
Double check valve should be on water main ????

:-S Nowt wrong with it!

The attached pressure vessel is functional but not pretty. For change out of £30 you can get one and a bracket from screwfix.
If I was in the situation you are now I would just box around that one for the time being. I don't consider it good practice to use a flexi on a heating system [It ain't proper plumbing!] but if the quality of the flexi is within the working tolerance of your heating system it won't do any harm.
 

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