Ravenwoods
Member
For my potable water lines I off course use the lead free solder. But for my heating zones I used lead solder. I've been using the 50/50 lead solder. In the past my success at leak free joints for large copper pipe with big brass connections such as ball valves or other big brass connections has not been 100% good. Some of my joints developed small leaks. So I thought I might have better success using 60/40 solder with its lower melting temperature for my big joints. In a couple days I plan on sweating a few of these big pieces. I do use the mapp gas to get a higher temperature. So I was just wondering if this is a good idea.