Air in one radiator

[benjamin31]

Hello,
I seem to get air in one radiator all the time. It takes about a week after bleeding it for the top half to get air in it.

I have a vented system, which i've drained recently and put some cleaner in. The water was pretty dirty, and if air is getting in somewhere, I guess it'll not take long to get dirty again.

Any ideas why the air is getting in?

Thanks.

 

[S0LUTI0NZ]

It would appear that you have a minor leak somewhere in your system and the air is collecting in the radiator highest up in your system. If you can't locate it, one way to get rid of the air would be to replace the standard bleed valve, with an automatic one which operates onlt when the internal pressure reaches a certain level.

 

[simond]

Automatic airvent on pump startup?

Pumping over?

 

[benjamin31]

I don't have an automatic air vent, i might fit one.

It doesn't pump over.

Can't see any signs of leakage anywhere.

Thanks.