How do you fill a pencil torch?

Buy a can of Butane at Walmart or even a convenience store. May or may not need an adaptor, probably not. Insert tip into fill valve on torch and press firmly (nozzle should be pointing down). A little gas (very cold) may escape. Only takes a few seconds to fill. Repeat process two to three times for a complete fill. Let torch sit for five minutes before trying to light so gas pressure can stabilize. One can of Butane will last quite a while. These things get very hot so be careful and be mindful of where you place it after it's off as the tip will stay hot for a little while.