overflowing expansion tank

6 Feb 2007
Reaction score
United Kingdom
i got a small problem at home with my gas ch/hw system..its a gas fired open vented system with an expansion/header tank in the loft....when the heating is on the expansion tank overflows, been up to the loft and its full of steaming hot water..the overflowing is a drip,drip drip not spurts..you can also hear drip drip drip in the loft too..ive tried the ball valve thats all working fine..ive turned the pump down to one..and although its probably slowed it down its still dripping..any ideas?
Sponsored Links
Lower the level of water in tank to 100 mm off the bottom and try that first. :D

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links