[mochaccino]

Nursing pumps use a pump and release pattern that seems to negate the need for a pressure sensor. You control the pressure by varying the length of the "pump" time in relation to the "release" time. Actually, it seems like they usually have preset intensity levels and the higher intensities use longer pump times, if that makes sense. As long as the suction produced isn't too high to begin with, all Ill need to do is choose the lowest intensity, and it shouldn't be possible to overpump.

As far as wear and tear is concerned, hopefully I won't have to replace it more often than every 3 or 4 months, but if you have any tips on how to choose a sturdy unit, I'm all ears. Thanks