Can one work safely with a propane torch, if the temperature is
Hi Judy, Propane will work well, even in temperatures below
freezing (32F). You will start to run into problems in sub zero
temperatures. As propane gets colder its pressure begins to drop.
At room temperature, propane has a pressure of about 100 pounds per
square inch (psi), at 32 F, the pressure drops to about 70 (psi).
both of these pressures should be ample to operate your torch.
Somewhere about -30F, propane pressure drops down to less than 20
psi. At this pressure, it would probably be difficult to sustain a
flame on your torch, but then again, you probably don't want to be
outside when it gets that cold. I know someone in Calgary, where
temperatures can drop below -30F, who stores her propane tank
outside and never seems to have a problem getting enough pressure to
run her torch..