Reductant Purge Valve
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2016 Ford Transit-350 HD, 2016 Ford Transit-350, 2016 Ford Transit-250, 2016 Ford Transit-150, and 2016 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The reluctant purge valve allows the reluctant pump assembly to reverse flow and purge the system when commanded by the PCM. The reluctant purge valve is integral to the reluctant pump assembly. For additional information on the reluctant purge valve, refer to the reluctant pump assembly description in this article.