Your Prismo's valve should last a good long time! In the situation where you may need to remove or replace it, we've made it easy to do.
To remove, use the eraser side of a standard pencil and insert it into the depression of the orange valve (the side that faces down into the vessel you are pressing into). With little force, it should pop right out.
To install, lay the Prismo face down on a flat surface. Position the new valve in the center opening so that the plastic structure (looks like four little posts with a circle) is facing back toward you.
Press firmly straight down on the valve until it "clicks". That's it, your new valve is seated and you are ready to start pressing.
Things didn't go as expected? Please reach out to us using the "Submit Request" link at the top right of this page and we'd be happy to help.