Where can I buy a AAV screw / cap (automatic air vent)

[lemon_1]

Hi

My Baxi main eco elite has a AAV at the top. But the small black plastic screw thing is missing

I thought I may be able to buy one without having to buy the full AAV. Do any of you guys know if I can just buy the screw?

 

[durhamplumber]

the black screw does not really do anything apart from stop it weeping when it is passing...The whole thing is only about a tenner

 

[Madrab]

They're usually the same as tyre pressure shreader valve caps, try one off your car and see if it fits.

 

[durhamplumber]

They're usually the same as tyre pressure shreader valve caps, try one off your car and see if it fits.

And gain nothing!

 

[HERTS P&D]

They're usually the same as tyre pressure shreader valve caps, try one off your car and see if it fits.

And if it fits then nick one from the neighbours car.

Andy

 

[Madrab]

And gain nothing!

I wonder why they have them to start with .... hmmmm ..... Oh possibly to cover the valve opening and stopping any crud from getting in there and gumming up the valve.

 

[durhamplumber]

wonder why they have them to start with .... hmmmm ..... Oh possibly to cover the valve opening and stopping any crud from getting in there and gumming up the valve.

....They serve no purpose...Stick some tape over if you that concerned

 

[oldbuffer]

I think they are there to enable you to shut the AAV when it (inevitably) leaks.

 

[Madrab]

....They serve no purpose...Stick some tape over if you that concerned

They're called dust caps for a reason, they stop dust getting into the workings of the valve. Doesn't take much dirt to stop the seal in the valve from closing properly. If they served no purpose then the manufacturer wouldn't fit them, it would just be a waste of profit, somehow I don't think they would do that.

Especially relevant too are the ones with the metal caps which have a fibre seal in them that are designed to be left finger tight, they still vent but swell and seal up if the valve leaks.

 

[just pumps]

They're usually the same as tyre pressure shreader valve caps, try one off your car and see if it fits.

Thinking one off a bicycle might be smaller (?)

 

[HERTS P&D]

Thinking one off a bicycle might be smaller (?)

And if it fits then nick one from the neighbours kid bike.



Andy