-
Will
not lose its prime over a period of time as all ball checks are
immersed in the material at the bottom of the drum.
-
Pumping
action is at pump base, hence, full positive feed of materials
-
Higher
viscosity fluids can be pumped.
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-
Will
lose its prime over a period of time even if an additional ball
check is installed at pump base.
-
Pumping
action takes place above the material. Suction required and have to
work through 3 ball checks if additional ball check is installed at
pump base.
-
Can
only pump lower viscosity fluids.
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