[QUOTE=Worth1;632277You would think to over pressure plug would blow before the canner exploded.Worth[/QUOTE]
I wouldn't trust too much the safety valves of old canners, they are made of rubber that can become as hard as iron with age. What makes me ultra careful is experience : In a hospital I have seen a man with a completely burnt face, only his eyes had been more or less protected by his glasses. A relative of mine has been severely burnt plus a broken jaw when the sterilizer she was working with in a hospital exploded. The main sterilizer was on maintenance and she had been ordered to use an old one...
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