To inflate a Presta valve, you simply unscrew the valve stem anti-clockwise and after that attach a pump. As soon as the specified air stress has actually been attained, remove the pump and screw the valve stem clockwise to be sure it really is airtight. The typical Presta valve has https://extrabookmarking.com/story19749204/not-known-factual-statements-about-addon-prestashop