How to Select DC Powered Pumps                      Image Credit: Gorman-Rupp Industries | Xylem Flow Control | Johnson Pump, An SPX Brand   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...
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Q & A on DC Powered Pumps

We asked our users for their input on DC Powered Pumps. Here are the results of 152 users familiar with DC Powered Pumps.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing DC powered pump design?
24 answers
Answers:

From our perspective, we believe Switched Reluctance will be the eventual motor driver, materials cost will drive the the products in this direction.

~Hsin Yi L, Manufacturer, ChaiYi, Taiwan ROC

Brushless heavy duty 12 Volt DC motors as replacement to Brushtype motors.

~ARUNAVA A, Technical Support, India

Brushless technology, robust plastic housing, sealed ball bearing

~Purchasing, Sofia, Bulgaria
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Q:
From your perspective, which companies are creating the most innovative DC powered pumps?
20 answers
Answers:
Parker Hannifin, Oildyne Division MTE Hydraulics
~Joel S, Marketing/Sales, Seoul, Korea
"Laing", "Small Pumps", "Shurflo"
~Purchasing, Sofia, Bulgaria

Two brands: piusi and fillrite.

~toby V, Project Manager, cape town, rsa
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Applications and UseTop

Q:
What are some of the applications you have used a DC powered pump for?
37 answers
Answers:
Products we have designed and built: 1) DC powered circulator pumps 2) DC powered dewatering pumps
~Hsin Yi L, Manufacturer, ChaiYi, Taiwan ROC
Spraying curing and sealing compounds, pesticides, cleaners, protective release agents.
~Jeff S, Marketing/Sales, York, PA
* Meter biodiesel through drywash columns filled with absorbent media and ion exchange resins. * Meter methanol through same columns to precondition them for use in dry washing biodiesel. * Pump methanol into a biodiesel processor. * Pump methoxide (a mixture of methanol and either sodium hydroxide or potassium hydroxide) into a biodiesel processor. * Pump water out of a biodiesel processor. * Transfer vegetable and animal oil from one container to another. * Pump finished biodiesel into storage containers and vehicle fuel tanks.
~Todd S, Engineer, Chico, CA
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Q:
Please share with us any “non-standard” applications that a DC powered pump has been used for.
16 answers
Answers:
In my applications, we have equipped remotely located greenhouses with solar powered automated systems which incorporate the pump and timers to interact with fertilizer injectors to administer a programmable combination of pure water and fertilizer to the crops. We also incorporate rainwater harvesting to make the system almost fully self sufficient - relying on no external supply of electricity and little on external water supplies.
~Kevin H, Director of RE Company, Kingston, Jamaica
Along with a "Tesla Type Transformer Generator", an aircraft engine, electric, propeller, would provide portable power without fossil fuel, and unlimited range.
~Milton B, Engineer, Jacksonville, FL
Pumping hot water into the "dry food" sealed plastic meal bags of astronauts to prepare food by rehydrating it prior to consumption.
~John W, SME, Houston, TX
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of a DC powered pump?
7 answers
Answers:
Leakage of fluid from the seals of the vane pump, enters inside motor, thus causing damage to the comutators & armatures, also damages & stuckup the carbon brushes in the holders. Timely & proper servicing is required both for pumps & motors. Better to prepare a periodical maintenance chart.
~ARUNAVA A, Technical Support, India

Carefully select the correct product when pumping flammables or a disaster can occur.

~Hsin Yi L, Manufacturer, ChaiYi, Taiwan ROC
Failure to verify power to motor as specified.
~Milton B, Engineer, Jacksonville, FL
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FeaturesTop

Q:
What would your design or feature wish list be for this product?
26 answers
Answers:
30 inch diameter, 1 inch shaft 28 pole "outrunner", this would allow the controller to adjust and apply power over a wide range of applications.
~Milton B, Engineer, Jacksonville, FL
Precision low volume delivery, overload or underload protection, miniature in size, adjustable flow rate, work with both air and fluid.
~Engineering, Design, Richmond, Canada
Greater abilities to lift water from a river or pond of the order of 250-300ft.
~Kevin H, Director of RE Company, Kingston, Jamaica
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Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of a DC powered pump?
9 answers
Answers:

Unit cost is a factor, however it should not be the overriding factor, maintenance is overlooked too often.

~Hsin Yi L, Manufacturer, ChaiYi, Taiwan ROC

Oversize rather than undersize; use gate on output to control load on motor; pump materials should fit the materials being pumped.

~Milton B, Engineer, Jacksonville, FL

Most vulnerable part is motor starter, not the hydraulics body.  Need to consider both electric and hydraulic circuits with same importance.

~Joel S, Marketing/Sales, Seoul, Korea
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Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using DC powered pumps?
13 answers
Answers:

Know what type of pump you are getting. Depending on what your application is, certain types of pumps will not work. For example, a centrifugal pump may be a bad choice if you are pumping a viscous fluid against a pressure.

~Todd S, Engineer, Chico, CA
When incorporated with solar tech it provides a viable technology for farming. It allows for more precise use of the resources, hence an improvement in efficiencies.
~Kevin H, Director of RE Company, Kingston, Jamaica

Electrical apparatus or control products do not handle current ratings for hazardous locations.

~Garth B, Project Manager, Edmonton, Canada
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