To inflate a Presta valve, you simply unscrew the valve stem anti-clockwise after which you can connect a pump. The moment the specified air tension has been achieved, eliminate the pump and screw the valve stem clockwise to make certain it's airtight. Knowband has the experience in establishing Prestashop purposes https://bookmarks-hit.com/story21464668/addons-prestashop-no-further-a-mystery