This article is essentially a poor prepper’s guide to the affordable solar-powered Dankoff Slow Pump. In my case, I put together a portable DIY solar water pump for only $1,500, including photovoltaic panels.
Water is life and the more ways we can get it, the better. For surface water, the Dankoff Slow Pump is what I would use in many situations. There are so many pumps to choose from, but to make a simple and easy choice; if I could only afford the least expensive, and most reliable solar pump for all surface water sources, it would be this pump. I have the Dankoff Model #1308-12, but I now recommend the #1303-24 as the best for the money for most folks, for several reasons. I learned by doing, and found that I should have got the #1303-24 instead. Learn from the mistakes of others, we’ll likely not live long enough to make all of the mistakes ourselves. [JWR Adds: Dankoff also makes a 48 VDC model.]
That said, the Dankoff Model #1308 is actually not all that bad a choice. It works reliably too, but it only pumps about half of the water volume of the #1303. The #1308 is a better application when used for pumping longer distances, or up mountains as high as 450 feet. And because photovoltaic panel prices have dropped significantly since I purchased the #1308, the #1303 now makes more sense. I have also built many ram pumps that perform well in certain sites with enough ‘head’, but the Dankoff Slow Pump will pump from all surface water sources.
Ram Pumps?
A good quality ram pump will cost about the same, plus the galvanized drive pipe, stand pipe, long feed pipe, and fittings, but it requires flowing water, and a minimum amount of head, or drop in elevation, given a specific lift, or distance to be pumped. However, ram pumps are not a plug and play device, but requires some real engineering to get it right. It is technically more difficult. If you have the right kind of water source, then the ram pump could be a much better choice. The Dankoff Slow Pump is, fortunately, much easier to use. It can be used for all surface water situations. The YouTube vlogger Engineer775 has many excellent videos on the development of many types of water resources, including the Dankoff Slow Pumps that can be used for creeks, ponds, springs, and cisterns. He prefers these over other types of pumps for these situations. The slow pump is the best ‘tool’ for the job when it comes to surface water that is no lower than 15 feet from where a slow pump can be mounted.Continue reading“My Solar-Powered Dankoff Slow Pump System – Part 1, by Tunnel Rabbit”