Calnetix's subsidiary Sapphire Technologies' FreeSpin™ In-line Turboexpander uses advanced magnetic technologies for achieving necessary pressure reductions while extracting usable clean energy. This technology has a beneficial impact on various hydrogen and natural gas industrial applications.

Sapphire is working with major OEM producers of air and gas products on both compressor loaded and electric generator loaded turboexpanders utilizing Calnetix's Magnaforce™ motor generator and Powerflux™ magnetic bearing technologies. Calnetix’s Powerflux™ magnetic bearing technology requires no lubrication and provides non-contact operation without any wearable parts, therefore allowing for enhanced efficiency and reliability, while reducing lifecycle cost and eliminating the risk of oil contamination in the process.