Joining aluminium to copper?

[Steven_AC]

I have a leaking copper to aluminium joint it's currently jointed by a compressed coupler but having trouble finding a tool for remaking the joint

Does anyone gave any suggestions or know we're I can purchase a tool?

[NewmanRef]

I would lose the coupler and silver solder it.

[Brian_UK]

What's inside the tube?

[install monkey]

air,oil residue:D

[charlie patt]

use a vulcan lockring available from srw vulcan hrp etc etc some of the gamko coils that use this method of jointing alloy and copper the evaps are cheap as chips and would be cheaper than buying a kit

[install monkey]

cant silver solder onto ali, lawson duo pipe have ali rods for ali-ali prob cant use em on anything else

[lokringpete]

There are brazing rods available for Copper to Ally these are made by johnson matthey and sold by the same wholesalers that stock ECO Aluminium tube, after you have made the joint by Lokring or brazing you would need to either cover the joint with a self adhesive heat shrink or spray with a coating type product to prevent any galvanic corrosion from occuring.