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...
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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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