Yes, on most high pressure PRESTA valves ( non automobile type valve ) tires *It Is A Very Good Habit To Just Give The Valve A Very Brief *POP* with a finger so that a very short 'PSST' sound is heard.
This is very important in that it breaks the *glueing effect* that occurs between the valve sealing gasket and the internal valve seat.
Last edited by HvPnyrs; 03-05-13 at 12:12 PM.
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