metal to plastic connection

[tonchee]

I put in a new boiler in an old radiator system - new boiler has plastic pipe and old system is iron - connection has slow dripping leak due to expansion differences - What can I do?

 

[ogoshi]

Try putting a section of copper pipe between the iron and the plastic.Make the joints using brass compression fittings with a good coating of jet blue on the olives(or cones).
Hope this helps.

 

[tonchee]

Thanks - I'll give it a try - putting a copper link in between the iron and plastic - thanks again!