<< [[Vacuum Technology MOC]] ![[CleanShot 2023-07-13 at [email protected]|lg]] ![[CleanShot 2023-07-13 at [email protected]|lg]] >Image source: Handbook of Vacuum Technology, Karl Jousten Jets of oil vapor continously boil up and condense on the walls of the pump. Gas molecules are trapped under the screen of oil vapor. A low backing pressure is required, otherwise high backing pressure will force oil vapor into the system. Cooled baffles help trap oil vapor in the pump. ![[_Users_isabelburgos_Documents_Obsidian_Notes_bin_Linked Files_0AEE3A8A-B3DE-45AD-A562-D6BB537046DF.jpg|grid]]![[_Users_isabelburgos_Documents_Obsidian_Notes_bin_Linked Files_D2277F85-2787-41AB-BDE2-1751B5456EF0.jpg|grid]] > [!Photos] Aftermath of severe backstreaming on the H7000 > ![[_Users_isabelburgos_Documents_Obsidian_Notes_bin_Linked Files_9DD83BF5-48B3-4A62-8703-C82D6E6A0BA1.jpg|grid]]![[_Users_isabelburgos_Documents_Obsidian_Notes_bin_Linked Files_47185C87-AA9A-4CB6-86C3-8A4C61F76107.jpg|grid]]![[_Users_isabelburgos_Documents_Obsidian_Notes_bin_Linked Files_6B6A1E09-B6F0-495A-BF92-148356DBB9A4.jpg|grid]]