With a Tefal pressure cooker, you can prepare ingredients with high pressure. You need to close the lid completely so the pressure can build in the pan. So you can cook faster and you save energy. An other advantage is that the pan extracts the oxygen, so nutrients and vitamins remain in your ingredients. The Tefal pressure cookers have 2 settings. That's useful, because you always use the right pressure for your dish. The control valve prevents the steam outlet from clogging.