The benefits offered by piezo technology for efficient and precise gas handling are pretty impressive and include huge energy savings, quiet operation and no heat generation. Whether in the semiconductor industry, laboratory automation or in medical technology, it can be used in fast pick & place applications, high-precision dosing of adhesives or for the reliable, mobile supply of oxygen to patients. It is based on a principle that is completely different from that of conventional solenoid valves. How piezo technology works and what features make it the better choice for many demanding applications. Depending on the design, piezo valves can carry out a variety of functions for different requirements. Festo offers a wide portfolio of solutions, from 2/2-way proportional valves to proportional flow valves and pressure regulators and includes piezo valves that are used as pilot valves in the Motion Terminal for Industry 4.0.