heating expansion tank float valve overflowing again

nofoollikeold

Did you empty and clean your header tank before draining, because if not there is a fair chance you have washed muck / sediment through the system.  

southcoastrgi

Sounds to me you have too much water in there, adjust the ballvalve you only need it about an inch above the outlet, you will prob need to bend the arm down 

royalmike

southcoastrgi said:

Sounds to me you have too much water in there, adjust the ballvalve you only need it about an inch above the outlet, you will prob need to bend the arm down 

He has already stated that he has hot water going into it !! 

gamston

as I said had a new ballcock, but it had a small hole in it which mean it didn't float (did take 3 weeks from install it sunk so was a really small hole
just need to change an TRV on each heat circuit to a standard valve to act as heat sink,