I have an insulated copper immersion cylinder that is leaking from one of the joints made through the wall of the cylinder.
My question is: is it possible or practical to repair the joint so I can avoid replacing the cylinder? (The cylinder is over 20 years old)
(Additional note subsequently added: This is a Servowarm system and the cylinder appears to have a different design from the 2 standard direct or indirect cylinders available today. 1 Large pipe (28mm?) in the top, another in from left about 12-14 inches up from bottom, 3 x 15mm on right hand side - 1 high (ish), 1 about midpoint and the last a bit lower)
I can't find anything on internet that looks like this and am at a loss as to how I would plumb in any of what appear to be "standard" replacements. I'm guessing it would be an indirect cylinder and would need re-routing of pipework. I am very savvy with plumbing in general so am quite prepared to undertake replacement of cylinder as long as I am confident I understand existing system. Any help much appreciated.
Chances of repairing the leaking joint are small, you'll probably rip the joint out of the the cylinder wall if you try.
Suggest you post a picture of the cylinder, your description does not really help.
Thanks everyone for responding, I did in the end replace the tank and a pain of a job it was too - pipework that did line up was bunged up (including the drain cock grrr). And the remaining pipework all needed re-routing to line up.
As someone suggested trying to fix the leaky Deleted joint would have been a complete no goer - it was so seized I couldn't even undo it to remove tank and had to cut it.
Still despite the expense the new tank and plumbing has made a big difference in overall efficiency. Possibly partly because I fitted a Surrey flange which is much the better way to feed a shower.