What is this thing on the landing?

[sidecar_jon]

there's a pipe emerging from the floor. Near the airing cupboard. short pipe with a compression fitting and a thing like one of them small coffee cups closed top but with an offset small short projection which looks to have a ball bearing in it or something (sort of reminds me of a pressure cooker safely valve) on the top.. is it something associated with my Ex Gas back boiler? or ..what? Asking as i might have to remove all the pipes from the old back boiler when a new combi goes in. Wondering of its to do with the backboiler or the emersion heater.

 

[chrishutt]

Sounds like an AAV.

 

[sidecar_jon]

err yes..googleing AAV brings up Association of Avian Veterinarians...which maybe useful as per avian Flu.... but to a plumber what is a AAV?

 

[brumylad]

post a picture if u can.

if u can't then where is the pipe coming from, can u chase it back to the copper cylinder (tank) in the airing cupboard etc.

what colour is this fitting, brass colour ?

good suggestion Chris; AAV (auto air vent) with a red cap ?

 

[corgiman]

flexcon AAV come with a red cap brumy

 

[chrishutt]

googleing AAV brings up Association of Avian Veterinarians

But if you searched on this forum you'd have found Automatic Air Vent (and Air Admittance Valve ) no problem.

I think the plastic cap is missing.

 

[sidecar_jon]

no red cap but its been painted!...investigating.... just scraped it and its copper under the white paint.

here it is...

http://img.photobucket.com/albums/v669/jon_sidecar/P1010029.jpg

 

[chrishutt]

Like I said.....

 

[corgiman]

chris is right its an automatic air vent

 

[croydoncorgi]

Not too happy about the angle it seems to be sitting at..... Watch out the compression joint doesn't give way.

 

[chrishutt]

chris is right

Ah, corgiman, those three magic words....now I go to bed happy.

 

[sidecar_jon]

thanks for the ID... its been there since the 70's according to the house paperwork... and its not functioning at the moment i think as the boilers out...cheers again.

 

[corgiman]

chris is right

Ah, corgiman, those three magic words....now I go to bed happy.

are you telling me that you dont hear that at least twenty times a day ????

 

[JohnD]

chris is right

Ah, corgiman, those three magic words....now I go to bed happy.

are you telling me that you dont hear that at least twenty times a day ????

go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy
go to bed happy

 

[sidecar_jon]

out of interest... you say vent?.. so its a safety valve ?... if the old system over heated would it then erupt stem onto the landing?... or is it a valve that lets air in?