I've been cut off from the internet for some time and I'm glad to be back. I'm fond of using old tools etc. I think it's a way of showing respect towards the generations that made them and used them. Using sensibly old pressure cookers isn't risky as long as you don't load the valve with a heavy bolt to increase the pressure inside. Safety margins were important when they were built, I suppose we don't have to take into account metal fatigue.
Using a pressure cooker as a frying pan without burning a rubber gasket or at least shortening its life isn't a problem if you cool its rim completely with a wet sponge before setting the lid on it.
all the best
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