Section 07 - Pumping Speed Curves; Speed Curves - Welch DUOSEAL 1399B-10 Owner's Manual

Section 7: PUMPING SPEED CURVES
HIGH EFFICIENCY PUMPING
CHARACTERISTIC OF DUOSEAL®
PUMPS
The low RPM design of DuoSeal vacuum
pumps makes it possible to maintain high
pumping efficiencies into the low micron range.
High RPM direct drive vacuum pumps, on the
other hand, experience a rapid fall off of
pumping speed below 100 microns.
A comparison of the DuoSeal pumping speed
curves shown below, versus high RPM pump
speed curves conclusively illustrates the
superior performance of the DuoSeal pump.
What does that mean for the vacuum pump user?
DuoSeal pumps provide considerable faster
pumpdown time in the low micron range.
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