Pressure Switch
grabcad
This switch is 16 x 16 x 7 mm excluding the tube connection. It could be modified for vacuum by placing the tube connection on the opposite surface. Total component count is 7 - assembly is in the included PDF. The tube connection dimensions were copied from one of the included files. One of the models has pins for PC mount; the other has .5 x 4.7 connectors. I do not have the engineering knowledge to properly size the diaphragm and contact thicknesses to work for the required pressures. Same for the diaphragm material - assuming a tough, stretchy material.
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