People should need to submit a 4473 in order to purchase a pressure cooker.
We actually had to order the pressure cooker from the only local store that sells them and wait a month for it to arrive. Yes they do blow up. That is why we had to scrape the bean soup off the kitchen ceiling and then repaint with kills.
There is a safety valve that blows out and the insides go straight up through the small hole. The lid stayed on but the bottom of the pot became convex.