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Diaphragm pumps are called positive displacement pumps because they
pump a specific volume for each pump cycle. Diaphragm pumps move
fluids more slowly than centrifugal pumps, but they can handle
thicker mud and larger amounts of solids including abrasive
materials. They also tolerate air being drawn into the pump, and can
be run dry without damage, unlike centrifugal pumps. Diaphragm pumps
are widely used on construction sites to control slow seeping in
evacuations, and for pumping out septic systems and operating well
point systems. Models DP2H and DP3H include Oil Alert to help
protect the engine against damage from operation with an inadequate
oil supply. Riverside diaphragm pumps feature a straight-through,
self-priming design. The rubber elastomer diaphragm and flapper
valves are easily replaced on site, and the aluminum pump body makes
the unit easier to move around the job site. |
