Siemens Centaur Vacuum Pump Assembly 11222226 Rev B, also known as KNF PU3286-N838.1.2, is a replacement diaphragm vacuum pump module for Siemens Centaur XP analyzers. The unit is supplied as a new part with the Rev B configuration (11222226, PU3286-N838.1.2), bridging the Siemens assembly to the KNF pump family used in Centaur systems. It provides the vacuum required for the Centaur XP instrument's sample handling and processing workflows. This replacement pump assembly is intended for Centaur XP platforms that specify the 11222226 Rev B / PU3286-N838.1.2 configuration.
