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The eMag Solar Pump™ is the latest development in Solar Pump™ technology from Thermo Dynamics Ltd. 


Pumping with as little as one watt of power, the eMag Solar Pump™ was designed from the ground up to be an extremely efficient 100% solar powered pump for closed-loop solar water heating systems. It can also be used for low-flow irrigation and general water pumping and can be used to pump most liquids, including water and water/glycol solutions. 



DOWNLOAD: Solar Pump™ Brochure

DOWNLOAD Solar Pump Sizing Guide


Solar Pump™ Introduction

The sun powers the Thermo Dynamics Solar Pump™ - no batteries, no high-voltage electricity, no engine consuming gasoline or diesel fuel - only harmless, low-voltage, solar-generated electricity, eternally available and pollution free.


The Solar Pump™ system consists of a rotary vane pump driven by a photovoltaic (PV) powered DC motor and controller. The PV module drives the DC motor via a built-in linear current booster (LCB) with differential temperature controller, and utilizes a proportional speed control strategy achieved by the variable output of the PV module. This ensures maximum performance at all levels of solar irradiance and enables the Solar Pump™ to begin pumping with as little as one watt of power (one-tenth of a full sun, 100 W/m2)!!


Flow rates range from 0.3 liters/minute (0.1 USGPM) to 5.0 L/m (1.3 USGPM), depending on the model. Available in 12 VDC configuration only. 


Brushless DC Motor (models: P24070EM and P50140EM)

The e-Mag Solar Pump™ utilizes a 12 VDC brushless DC motor coupled directly to the pump via a rotating electro-magnetic field. The motor’s electro-magnetic field interacts with a magnet secured to the shaft of the pump rotor. As the electro-magnetic field rotates, so does the pump rotor causing the pump to circulate. Commutation of the brushless DC motor is achieved by an on-board motor control circuit that utilizes hall effect sensors and a motor control IC. The motor control circuit also features a built-in differential temperature solar controller with linear current booster for a complete solar water heater control package.


Solar Pump™ Use

The Thermo Dynamics Solar Pump™ is the perfect pump for solar water heaters. For most single-family homes, a 10 - 20 watt PV module provides all the electrical power necessary for the entire solar water heater! There are no AC powered electronic components and there is no high voltage wiring to install. All electronic components – the motor, linear current booster, and differential temperature controller - are all combined into one unit and are powered by low voltage DC power directly from the PV module. The PV module provides the precise amount of power required for circulation of fluid through the solar collectors any time heat is available for collection, and the Solar Pump™ ensures that the flow rate is proportional to solar irradiance, maximizing the delivery of energy from the solar collectors.


Installers love the Solar Pump™! 

It is so much easier to install than an AC-powered circulator system. The Solar Pump™ is a rotary vane pump unaffected by air bubbles and capable of high pressure (max 50 PSI / 3.5 bar), allowing installers and homeowners to save time and money by using smaller diameter tube, and avoiding the hassles of air separation. Homeowners also appreciate the fact that ALL the energy used to produce their solar heated water comes from the sun, and none from the electrical grid that delivers electricity generated by environmentally damaging technologies.


Solar Pump Curves

  • P24070M (0.3 - 2.4 LPM / 0.1 - 0.6 USGPM)
  • P50140M (1.0 - 5.0 LPM / 0.3 - 1.3 USGPM)


Port Sizes: 3/8" FPT

 Should your application require fittings or hoses of a different size, metric or imperial, substitutions are possible. Please contact us for more information.


"Finally! A solar water heater that is 100% solar powered - the way it should be."

eMag Solar Pump with Differential Temperature Control

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