![]() Technologies Applicable To Very Small, Low Coral Islands/ 2.1 Freshwater Augmentation Technologies/2.1.3 Pumps": Overview of ram pumps (and hand pumps) with some useful diagrams, from the (ahem) " Sourcebook of Alternative Technologies for Freshwater Augmentation in Small Island Developing States /Part B - Technology Profile/2. Hydraulic ram pumps - 6-page Technical Brief, Practical Action (Intermediate Technology Development Group, ITDG), Acrobat file, 190 K ![]() The Gravi-Chek pumps have been tested by the Center for Irrigation Technology at the California Agricultural Technology Institute. There are three models available, providing water at rates from 20 to 16,000 gallons per day, depending on the installation ![]() Updated ram design from Gravi-Chek - The Gravi-Chek pump is the newest technology available in the ram pump industry. More about Gert Breur's water-powered suction ram pumps, including Spanish text also rope-pump and more: Materials list, numbered pictures and "exploded-view" photos show you how. Breur has also developed a small ram pump, easy to assemble, using standard "garden" materials except for some pressure tube. Good overview of ram pumps and their uses and restrictions from the Working Group On Development Techniques (WOT) in Holland (also rope pumps, windmills):ĭutch engineer Gert Breur's ram pumps are simpler, and they not only pump, they can also suck water up from a low-lying area into a stream. From Computers in Mechanical Engineering, January 1985 (with thanks to Kirk McLoren) Seirig, Mechanical Engineering Department, University of Wisconsin, Madison, Wis. Here is a computer-aided method for improving performance. Hydraulic Rams - Computer Simulation and Optimum DesignĪlthough the hydraulic ram pump has been around for roughly 200 years, its design has been largely left to trial and error. Made with an eye to the needs of developing countries. It can be made to supply compressed air or to provide a direct mechanical output to drive other devices, and can also act as a suction pump. The pump will operate when totally underwater. While much higher outlet pressures are possible, the 25 mm (1 inch) pump can lift about 1500 litres of water daily to a height of 20 metres, using 2 to 3 metres drive head and 20 litres a minute inlet flow. It is quickly adjusted using alternative tubes, and the plastic ball gives quiet operation. The heart of the pump is a stainless steel adjustment tube, and a free-floating high-impact plastic ball. The principle is similar to conventional ram pumps, but its construction and characteristics are different. The Bamford "Hi-Ram Pump" is a simple, low-cost, self-powered water pump using new patented technology. Also sells ram pumps.įleming Hydro-Ram pumps are powerful, lightweight, practically maintenance-free, and cheaper. More information about High Lifter pumps from supplier Mark Snyder Electric - Application & Installation, How High Lifters Work, Question & Answer, Not a Ram Pump (the differences). High Lifter pump maker Alternative Energy Engineering is now part of solar electric company Applied Power Corporation. ![]() Digital back issues can be bought online: See: Hydraulic Ram Pump - adapted from "A Manual for Constructing and Operating a Hydraulic Ram Pump" by Kurt Janke & Louise Finger, "Homebrew", Home Power #41, June / July 1994. Home Power magazine has had several good articles on the pumps, including designs and instructions for a cheap ram pump you can build yourself using off-the-shelf materials and a recycled fire-extinguisher. Ram pumps are noisy, high lifters are silent and can work with less water, but the water has to be clean and grit free, while the ram pump is not so fussy. A more recent variation is the High Lifter pump, which uses different principles to do the same thing. No modern magic this - ram pumps were invented more than 300 years ago. Or as little as a 2ft fall between the water source and the pump at a flow rate of 1 to 3 gallons per minute is enough to pump water 20ft higher than the source - as much as 4,000 gallons a day, depending on the model. A 20ft fall is enough to push water 150 feet above the source or more. Hydraulic ram water pumps use downhill water pressure to pump water much higher than it started, with no other power needed. Manuals, how-to's, research reports (full text online) Classics on organic growing, soil and health (full text online)
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