Those burners typically did not have a very high flame temp, even
getting a piece of steel red/orange hot took a long time. The flame is
quite diffused. But they put out a LOT of BTU's/ If you are trying to
preheat to the 600F range, these are great.

dave wrote:
anybody know the flame temperature of a gasoline "plumbers blowtorch"
type stove when it's burning blue? the kind in the center-left of this
picture, on the dolly...

http://machines.freehostia.com/sasge...s/photo63.html
babbitt_pouring06.jpg

I want to use it to pre-heat (heat soak) a pretty large piece of steel,
prior to brazing some stuff to it...

thanks for info guys :-)

toolie