Probably the same principal. The Power Pressure Cooker XL says you can also can in it. Here is the web site for the PPC.
http://www.powerpressurecooker.com/shop.php. You can also order them on Bed Bath and Beyond, Amazon, QVC, Wal Mart, etc. I'm thinking there is a learning curve when using one. I don't want my food to come out watery or not done. There is also a Facebook page for them.