I have several Presto pressure cookers...including one from the 1930's that belonged to my grandmother and one large canning pressure cooker from the 1940's which belonged to my mother.  All are used frequently.  In short, I am very used to using pressure cookers.  This thing was so tinny I would not even put it on the stove.  I packed it up and returned it unused.  Sorry to see that Presto quality has sunk this low!