Secret to Sweating Brass to Copper?
I spent the last 3 hours replacing the water heater at my house. In doing so, I had to replace the in-line 3/4" valve. I put a ball valve in this time which is brass and can't seem to get a completely water tight fit sweating it to copper pipe. I have no problem with copper to copper. Is there a secret to sweating a brass valve to copper pipe? Thanks for any ideas!