79K views · 209 reactions | Copper to PEX tips…I deburr and apply water soluble flux to the pipe/fitting. I only apply heat to the pipe for a few seconds. Then I focus the heat on the PEX A adapter. Once the solder melts, I remove the heat. Capillary action pulls solder into the joint for a watertight seal. I let that cool then do the PEX A installation #plumbing #pex #homerepairtutor #diy | Home Repair Tutor | Facebook