DEKKER Vacuum Technologies, Inc. – HullVac / September 2016
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THEORY OF OPERATION
The DEKKER
HullVac
rotary piston vacuum pump is designed and manufactured to achieve a high level of
performance. These pumps create a vacuum with a piston that moves in a circular path. As it rotates,
pressure is decreased on the inlet side and increased on the discharge side. The two sides are separated by
a film of oil between the piston and the cylinder. Once the piston makes a complete cycle, the clearance
volume is completely filled with oil, increasing the compression ratios within the pump. This design is what
gives rotary piston pumps their deep vacuum levels and durability. Depending on the application and desired
vacuum level,
HullVac
pumps are offered in single-stage or two-stage configurations. The two-stage pump
can obtain a deeper vacuum level because it utilizes two piston chambers in series.
Intake Stroke
Discharge Stroke
Not suitable above 100 Torr Not suitable above 10 Torr
