We connected our copper tank to the mains water (from our well) we realise now that we needed a pressure release valve and a tank in the attic. We are building ourselves but our funds were not fully released so we have to do the plumbing ourselves.

Anyway the presseure built up and the tank expanded out at the bottom so its now covex instead of concave... is the tank still OK?

Also if anyone has any advice on how to ptoperly install it that would be great. The tank is a single coil, 42 x 18 and it just the immerison we will be using,

Thanks in advance!