Universal 11mm Deflate Valve
The Universal 11mm "Deflate" valve is used on many different kite brands to let the air out. Almost all kites from 2013 and earlier had this valve as an inflation valve. At the moment this valve is still used on the kites of F-One, Slingshot, Flysurfer and more. This valve is usually only used to let the air out. Beside this valve we often see a 9mm inflation valve.
To stick this universal valve on your strut or leading edge it is useful to order a "Valve trap".