• • What makes the water move in a drip coffee brewer?
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  • The electrical pump pushes the water past the check valve and the heater up to the sprayhead 
  • The heater creates bubbles of steam, which expand and push heated water up to the sprayhead 
  • The thermal fuse applies a voltage to the heater so that it vaporizes the water into steam, after which it moves to the sprayhead 
  • Gravity pulls water out of the reservoir, and the check valve only lets it flow back through the sprayhead
  • The heater boils the water into steam, which moves up then condenses into liquid droplets at the sprayhead
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