DC powered pumps use direct current from motor, battery, or solar power to move fluid in a variety of ways. Motorized pumps typically operate on 6, 12, 24, or 32 volts of DC power. Solar-powered DC pumps use photovoltaic (PV) panels with solar cells that produce direct current when exposed to sunlight.

DC vs. AC

The main advantage of DC (direct current) pumps over AC (alternating current) pumps is that they can operate directly from a battery, making them more convenient and portable. They are easier to operate and control, since AC systems typically require a controller to manage speed. DC pumps also tend to be more efficient. However, AC pumps usually are designed for higher speeds and larger bursts of power. They also have a longer working lifespan than DC pumps.

For information on DC motors, visit the How to Select DC Motors page on Engineering360.

Types

DC pumps come in many different design types, each with its own method of operation, advantages, and preferred applications. For more information on these different types of pumps, visit the Pump Types information page on Engineering360.

Specifications

As with most pumps, the primary specifications to consider when discerning DC powered pump performance are flowrate, pump head, pressure, horsepower, and operating temperature. For an explanation of these specifications and pump performance curves, visit the Pump Flow information page on Engineering360.

Features

DC powered pumps can also be distinguished based on the features they provide, such as adjustable speed, run-dry capability, and corrosion resistance. Engineering360's Pump Features page provides a full list and explanation of these different pump features.

Image Credit:

Gorman-Rupp Industries | Xylem Flow Control