Worth,
I've just had a look at my 921 All american pressure canner.
there is a reinforcement inside the lid at the location of the manometer.
I unscrewed the manometer and found the threaded part on the lid was 11 millimeters long.
I screwed back the manometer into place, trying the keep the original torque. I had two mm of thread left on the manometer.
Inside the lid I could see there was still a fairly long threaded lenght.
The threading is standard in plumbing, replacements should be easy.
I suppose a highly qualified TIG welder could build a reinforcement on any kind of lid but the heat might alter its shape. Personnally I wouldn't advise it to amateurs !
|