I've never used a pressure cooker before, and I was so excited to get my Cuisinart CPC-600 pressure cooker! At first it worked just great and I was delighted to turn out wonderful stews in 20 minutes and even meatloaf in 25 minutes. But after about a week it stopped coming up to pressure and steam poured out of the red float valve. After reading another reviewer's comments, I started tapping on the red float through the plastic cover and jarred it loose; at that point it would rise and seal the unit so it would come up to pressure. Kind of a pain that I have to do that each time.
Except for that detail, it has worked very well.
Another reviewer asked what PSI the unit works at. Very odd that they do not include this info in their user manual or web site since you need the info to adjust cooking times when using other pressure cookers' recipes, but I emailed their tech support to ask and received this answer: