DaaB wrote:If thats a galvanised boiler I would avoid using a flame on it, it can give off nasty fumes
Heating galv is a definite no-no, I've felt the effects from welding it... Galvanised steel gives off zinc oxide when heated, this causes 'zinc flu', this can make you feel very poorly indeed...
Older galvanising also contains lead too (banned now), as well as traces of other heavy metals.
Incidentally, OH keeps ferrets* and galvanised weld mesh is not used for boxes as they tend to chew it - and it makes them ill. While zinc is not considered as a particularly toxic metal, I reckon the old galvanised washing boilers should really be avoided.
If you're concerned about the zinc, one possibility would be to remove the element and fittings, line the vessel with fibreglass, and replace the bits...
* ...Standing by for northern jokes...
