Does Your Bike Use Presta or Schrader Valves? Here’s How To Choose the Right One.

Learn how to tell Presta from Schrader at a glance, match valve length to your rims, choose the right pump or adaptor, and ...
IEEE

Theoretical analysis and experimental varification on valve-less piezoelectric pump with zigzag chamber bottom

Abstract: A novel valve-less piezoelectric pump with zigzag chamber bottom (ZCB) is presented. The chamber bottom of the pump is designed as a waves shape. The ZCB and the opposite piezoelectric ...