A Hydraulic ram pump is an instrument that requires and uses the energy of gravitational falling water to lift a smaller volume of water to a higher elevation than its source.
The pump, being self-driven with very few working or moving parts makes the Ever Green Gravity Pump a trouble free device with no pumping costs!
Depending on the drop and the lift, ram pumps will work on sites with 3 to 50 feet (0.9–15 m) of head (vertical drop) and can deliver to elevated sites far from the pump and source.
A project has been undertaken with the goal of creating a relatively easy and inexpensive way to pump water. In South Africa there are many locations where this type of “old” technology can and should be used (where practical) to make water accessible.