My propane blow torch run out of gas as I was soldering some 15mm pipe joints - so borrowed a neighbours. His Taymar BLO870 used butane/propane mix and seem to burn hotter. With mine sometimes when there is a little water in the pipe it just does not get hot enough to flow the solder around the joind... or takes ages.. So I want to replace an old blow lamp with something that can cure this problem (maybe even add automatic ignition but no entirely necessary). Advice on output levels and make / models welcomed. It's only for DIY so not daily use.