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“The
Slowpump #2507-24V is supplying water for a work camp
on the outer island of Onotoa. It's supplying water
for 60 people. The well is one half mile [800m] away
from the camp.” —B.C., Ministry of Works and
Energy, Kiribati, South Pacific
“I
have been very happy with the 1308 Solar Slowpump!...We
are using it in a 5 meter deep hand dug well in a valley,
and pumping 200 meters distant and 50 meters vertically.”—Dr.
D.L., World Missions, Cameroon, W. Africa
“These
pumps work great… Even during low light levels
when the motor is turning slowly, a small amount of
water can be pumped… The manual is easy to read.
Windy's troubleshooting section is excellen… Not
only have these pumps stood the test of time, but small
changes have made them even better.” — B.
Schultze, product review in Home Power Magazine #42
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Solar
Slowpump was the world’s first commercially available
low power solar pump. It was developed by Windy Dankoff in
1983, in response to those who said “that’s impossible.”
Thousands of Slowpumps have been installed worldwide by ranchers,
homeowners, missionaries, health workers, government agencies,
etc. Some of our oldest Slowpumps are still in daily service.
Slowpump is not submersible, but can draw water from shallow
wells, springs, cisterns, tanks, ponds, rivers, and streams,
and push it as high as 450 vertical feet and through
miles (kilometers) of pipeline. Slow pumping minimizes the
size and cost of the solar array, wire and piping. Slowpump
is less expensive than sub-mersible DC pumps, and made in
a much wider range of sizes. Wearing parts typically last
5 to 10 years. Overall life expectancy is 15-20 years.
Construction
& Features
Construction
& Features • Rotary vane
mechanism (positive displacement) made of forged brass, carbon-graphite
and stainless steel • NSFê
approved for drinking water •
Handles sea water, dissolved minerals •
Survives most freezes •
Permanent magnet, DC motor •
AC models use a low-surge PM motor that greatly reduces starting
surges, inverter and wire size requirements •
Installation and Service Manual is highly detailed and illustrated
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