canning

[rbeau30]

...The round one has 3 holes and the tree type one should be in 3 pieces. If it is only a tree type and is solid those are used for most canners that have a dial gauge as well. They are set to start relieving pressure @15 lbs so the real blow off does not go.

Like when you try canning with a turkey-fryer burner.

I have seen some like jerry is describing. The round one is a cylinder with 3 different positions around the rounded edges? Each corresponding to a different pressure.


My grandma had an old one with just a weight and no guage... She said she could tell the right temp by the sound it made.