24-09-13, 09:36 AM
Hard to judge from that angle and you could do with a decent camera... there are some available with more than a 100,000 pixels these days. :lol
If that pipe coming out of the top goes to the expansion tank in the loft (arching over the top with the end not submerged), then it may be a device to help separate air/gas from the liquid.
If that pipe coming out of the top goes to the expansion tank in the loft (arching over the top with the end not submerged), then it may be a device to help separate air/gas from the liquid.