On 23/09/2021 21:22, AJH wrote:
At that age, given the devastation that could result from a failure, I
would remove it ASAP. Also, you may have galvanised pipes that will be
starting to generate flakes of rust.
Providing your mains water pressure and flow rate are OK I would remove
the need for a header tank by converting to mains pressure DHW and mains
water at all cold taps. It's a fairly simple change but the DHW cylinder
will probably need replacing unless it's a new'ish one and rated for
mains pressure. Benefits are increased DHW pressure, potable water at
all taps and less plumbing in the roof space.