Introduction
Removing the internal one-way valve may become necessary if it becomes clogged and water is not flowing properly through the coffee maker.
Tools
- 
                  
                  - 
            Remove the carafe (coffee pot) from the coffee maker. 
- 
            Turn the Braun Aromaster KF 440 upside down so the base is exposed. 
 
- 
            
- 
                  
                  - 
            Using the larger plastic opening tool, gently push the tubing off of the one-way valve. (If the tubing is being stubborn and won't come off, run the metal spudger around the inside of tubing to free it up.) 
 
- 
            
                            
                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.