On 11 Jan 2004 01:54:00 -0800, (RJ) wrote:

Semi tempted by this thought - but for 2 things - 1 getting the right
seal - I can't find any mention of this particular setup on the web
anywhere! and 2 - the top of the cylinder looks so rusted, that if all
the rust is removed and cleaned away, it'll be impossible to reseal as
the cylinder is so pitted and rusted...

My neighbours had theirs replaced (by their landlord) - So I'll call
them and see if they can take a look - whilst on DIY issues I'd say
I'm 8/10 er, I'm not at all ofay with this type of setup....


Then don't do it. This is a cylinder of hot water at 60 degrees,
stored under mains pressure - up to about about 4 bar. Really,
according to Building Regulations they are supposed to be (legally
speaking) installed and maintained by a plumber specifically trained
on pressurised cylinders.

Normally, I will tackle anything with respect to plumbing, and I am
far from being a fan of government regulation but looking at your
photos, I wouldn't entertain the idea of trying to fix this cylinder.
Even if you can clean it up, and it looks doubtful to me, then you
would have to be very sure that it all goes back together properly.
What you don't know is whether the cylinder has in other respects
corroded and deteriorated. I would say that this really isn't worth
the risk.

If you want to DIY this, then IMM's idea of a heatbank does make
sense. It would be quite easy to plumb this in, although a bit of
wiring would be needed, and it has the advantage that the contents of
the cylinder are not under pressure. The heat is stored in the
cylinder in the form of water at low pressure and then this is pumped
through an efficient heat exchanger to heat the mains water. With a
vented primary system you can connect directly. I notice on yours
what looks to be a small pressure vessel for the heating (red) at the
corner of the picture. In this case you have a sealed system and you
would use an indirect heat bank with its own header tank built in.

Alternatively, you could just get the cylinder replaced with a new
pressurised one. However this really is a job that is supposed to be
done by a trained professional. If you were a 10/10 person on
plumbing then I'd suggest that you make your own value judgment on
whether to DIY, but since you say 8/10, then I would think carefully.
If you get it wrong then you can create a dangerous situation.







"BigWallop" wrote in message ...
"The Natural Philosopher" wrote in message
...
BigWallop wrote:


Now go out and buy a big wire brush and some scouring pads and clean the
whole up. Once youve done that, then more than likely you'l be able to
reseal the plate and tank back together no problem with some proper
neoprene
sealing rings. But it all has to be shiny clean.



Do you really think it can be resealed to 5 bar tested?
Safely?


Not disagreeing, just curious.


Depends on how competent the OP is, although the banding does a lot of the
work in pulling the two bits back together again, and as long as the correct
seals are used, then it is a job that can be done by someone who's good with
their hands and head (as in a bit of brain power). :-))


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