I have a pressure cooker with a 15 PSI regulator weight which should regulate the temperature inside the pressure cooker to about 250 degrees F.
What I have noticed is that, if I add more weights (coins, whatnot) on top of the regulator to increase its weight, I can reduce the amount of heat I apply to the pressure cooker and still maintain 15 PSI.
As I continue to add coins to increase the weight of the regulator, I can continue to decrease the heat of the stove and still maintain 15 PSI in the cooker.
My questions are, is the temperature inside a pressure cooker at 15 PSI still about 250 degress F with the additional weights and less heat? Am I increasing the efficiency of the pressure cooker by adding weights to the regulator and reducing the heat?
I would like to point out that, throughout the entire experiment, the pressure guage never goes over 15 PSI, so there should be no risk of "explosion".