[Kevin Sevcik]

..... Just out of curiosity, how were you planning on getting more than about -15 gauge psi out of a vacuum? Pressure at sealevel is about 15 psi, so a perfect hard vacuum is going to be -15 gauge psi at best. So, basically, you can't even approach the 60 psi limit, so don't worry about thing on the vacuum side of the equation.

The 60 psi limit does apply to the high pressure side of the vacuum generator, since the 60 psi limit applies to any working air on your robot. Only the air in the storage tanks can be over 60 psi.