For safety and hygiene reasons, we would highly recommend cleaning the following after every pump session:
Pump module / flange
Valves
eDiaphragm and eCap / Manual Diaphragm with Stem
Grey silicone seal
Hegen Bottles
It is also encouraged to sterilise these items after cleaning in preparation for subsequent uses.
Note: The silicone tubings and the Electric Breast Pump device do not need to undergo washing as they do not come into contact with milk.