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Rotary vane priming pumps are available separately mounted (model VPES) or transmission mounted (model VPE). The VPE and VPES models are driven
by an electric motor. The VPE and VPES models each contain one eccentric rotor with three vanes that slide in and out of the rotor.
On the VPE and VPES models, during operation, lubricant from the auxiliary priming tank provides lubrication and an air tight seal between the vanes and
pump casing. As the rotor turns, air is drawn from the priming valve inlet due to the vacuum created behind the priming pump. As the priming pump evacu-
ates the air from the lines and the main pump, atmospheric pressure forces water into the pump.
A check valve in the tubing line prevents possible back flow of water into the priming tank. An orifice controls the lubricant flow from the priming tank.
Figure 2. Rotary Vane Priming Pump
INLET FROM PRIMING VALVE
OUTLET TO ATMOSPHERE
1044
F−1031, Section 2312
Rotary Vane Priming Pump − VPE and VPES
Motor Ground Post
This electric motor driven rotary vane primer is used for separately mounted
applications. With the priming valve and lubricant supply tank, it forms a complete,
dependable priming system.
Rev: 02/27/06
Figure 3. Model VPES Priming Pump
from DPL82082
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