Proportional valves are sometimes referred to as I/P or E/P convertors. They convert a variable current or voltage signal into a proportional compressed air output. We offer a range of functions including open loop control, closed loop control, fail freeze options as well as ATEX options and the ability to program some of the functions and parameters. Proportional valves are also available with IO-Link digital control for increased data availability and performance insight, eliminating the need for a variable current or voltage signal.