White Tiger
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The other day I was trying to install a ball valve on a water heater and could not get the solder to take. I was using a MAPP Gas torch,used lead free solder and flux,used emery cloth on the inside of the valve and inside and out of the copper pipe,heatedthe valve up until the flux was bubbling then tried to put the solder around the joint and it just kept falling off,I should also mention that the pipe was upright and the solder needed to flow up into the joint,any idea what I was doing wrong? I never had that problem before soldering copper pipe,eventually it took hold after 5 attempts. Any advice pertaining to soldering copper pipe would be greatly appreciated. THANKS!