What's wrong with my idea to replace the pump in a Keurig?

[excavating_for_a_mind]

@Nanoda

I’ve fixed a cappuccino maker or two (ok, two), and I wonder what the PSI for a coffee maker would be. In one cappuccino maker, the manual warned of taking the scoop out early, lest high-pressure grounds be launched everywhere. The components certainly seemed designed for high PSI.

I imagine a coffee maker is probably lower pressure, but possibly still higher than your water line, in which case the coffee would just get wet and no coffee come out.

Point well taken. I also have worked with a cappuccino maker and am aware of your concerns. It seems those machines use steam (water above 212F) to create the pressure.

The Keurig operates a bit differently. According to the pdf in Post #4, there is a separate air pump to provide the pressure for forcing the water thorough the grounds, which I would not be modifying. All I am intending to do is replace the water pump with a solenoid connected to a pressurized water line.

Like I said, I think it will work OK, but sometimes I overlook the obvious. I appreciate any negative comments since I doubt I’ll get anyone to say “looks good to me”.