Why can't a pressure cooker be used outdoors?

Outdoor Pressure Cooker

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RE:

Why can't a pressure cooker be used outdoors?

The instructions that come with the pressure cooker state not to use the pressure cooker outdoors but doesn't elaborate.

It needs a steady ambient temperature.

If you set a 300 psi pressure kettle outside in the morning when it is 55 degrees and the sun begins to hit it....the internal pressure will rise above the kettles limit. There is a relief valve, but it can only do so much.

Basically if you heat it externally (beyond the contact point for heating) the internal pressure will rise too fast for the safety valve to compensate. It has been tested to operate between the average in home temperature to the point of failure. Bringing a wildly fluctuating temperature and other outside influences to the table probably cause a failure much sooner.

When a pressure vessel blows, you want to be as far away as humanly possible.

I hope this made a little sense. Look at it the same way as an overinflated tire on a 100 degree day.

My Dad layered the shredded cabbage, salt and dill weed into jars and packed it down well. He put the lids & rings on and within a few hours, you could her them pop when they sealed themselves. He never used a pressure cooker or water bath. Any jars that didn't self-seal were dumped out and composted. Good luck!

no clue!! I have used pressure cookers on wood cook stoves, on camp fires, on some fancy grills, but then again, all my pressure cookers are about 50 to 100 years old!

Because the flames from the alternate heat source (propane fuel, charchoal, wood) could go around the sides of the pressure cooker and damage the bakelite handles, or damage the gasket.