Can a leaking cast iron section of a steam boiler be repaired?

Question

Can a leaking cast iron section of a steam boiler be repaired?

Answer 1

yes, and it can be easy if you have a wielding/arc weld machine. if not, then it still can be relatively inexpensive to have it professionally fixed.

Answer 2

Welding cast Iron is almost impossible because of the cast iron properties. it will run the crack as you weld. There is a technique of brass lugging each end of the crack before welding and heating the whole section to be patched to an even temp, but is usually impractical in a steam or hot water boiler.

But  if the leak itself if not too extreme, It can be sealed with a product called boiler sealer.

It is a powder or premixed solution that when poured into the boiler in the right amount then percolated a while will heal the leak. The instructions are on the can. A brand name I remember is called SOS boiler sealer. The right steam fitter or boiler service tech with old time experience has done it and will know how.

Answer 3

your better off just buying a new one.

Answer 4

It take a special welder to weld up a hole or crack in cast iron. Don't weld it with a regular arc welder or even a torch welder. The heat causes other places to crack.

Answer 5

Yes it can. But it takes alot of time.