Complete Water Pump Systems

KS16 4200 GPD


LIMITED STOCK! Estimated Production Lead Time for M5 Pump is 1 Week.

Please contact API for lead times or view similar systems like the KS06 or KS10. You may also want to upgrade to our KB01-KB04 Systems (0.5HP).

Double the pump, double the flow! Our new double pump systems provide large water flow with the same great USA Made solar pumps!

 These larger-wattage solar systems prove incredibly beneficial during periods of low light and cloudy weather, offering 60% more power on cloudy days than the 180 watt or 255 watt systems. This system helps the pump produce more water and lengthen the pumping day by starting up earlier and running longer at max GPM.

  • Deliver up to 4200 gallons per day at 8.6 GPM maximum, based on a 7-hour run time

  • Easy plug together connectors

  • Long life brushless motor Merlin Series5 pump with 100’ of wire

  • No additional controller required

  • Professionally built in the USA

Bulk discounts available, please call for pricing. 


  • (2) 60 Cell Advanced Power Inc. solar panel. Our solar panels come with a 25-year power output warranty
  • (2) Merlin Series5: 12-32 VDC stainless steel submersible quad piston brushless motor solar pump comes with 100’ of attached wire attached.
  • Pre-assembled with aluminum mounts, wire harness, and ALC 1275 (if purchased)
  • Aluminum solar panel-to-pole mounts with fasteners
  • (1) Nylon Pre-Filter Kit


  • KS16 Systems with the double pump system require a 6” or larger well casing

  • KS16 system requires a 4 1/2” OD pole
  • Flows decrease as depths and pressure increases to maximum depth of 90 feet (40 PSI).


No additional controller is required for API solar water pumps, however the ALC 1275 greatly increases the life expectancy of our stainless steel pumps and prevents unnecessary wear and tear on the pump.

150 and 200 feet wire rolls are available. There is a $35.00 up charge for each additional 50 feet of wire.

Please be sure your well has been tested for flow rate and continuous flow supply. In order to reach these water demands, your well must be able to keep up with the solar pump. Otherwise, damages can occur.

  • Do you have wind turbines within 1/2 mile of your solar pump system? Find out why your system can become damaged here.
  • Don't forget to prep your system for the winter!! Weep holes are a must!
  • Ground Rods are great for preventing damage from lightening strikes, we highly recommend ground rods for solar systems.

Additional Accessories: 

Custom systems available up to 1200 GPM (Gallons Per Minute). Please visit our custom page to contact us.


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