1229D81 - Buchi V-850/855 Vacuum Controller Valve combined with condensate trap and non-return valve with attachment for Rotavapor (not necessary with V-700/710 in stand-alone systems).
1229D82 - Buchi RC-81 remote control can be used to control the vacuum controller and the Rotavapor: rotation, starting/stopping and raising/lowering of the flask.