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Our first commercially available GAP machine, the Feltenberger Pendulum Pump, is a general-purpose piston pump, the GP210, which provides four different settings for a wide range of pumping capability. Combined with the Aquathin filtration and reverse osmosis systems, the Feltenberger Pendulum pump becomes a complete hand-operated water treatment facility capable of producing 1,000 gallons per hour of clean drinking water.
The general-purpose pump is specifically designed to pump surface water by suctioning and can lift water approximately 25 feet from the water source to the pump. This pump is very durable, easy to maintain and can be set up and operating near a river, creek, pond, lake or any flooded area within about one hour.
In addition to treating virtually any type of contaminated water source, the machine can also be set to bypass all filters when it is needed to pump out a cistern or flooded area or for irrigation or sanitation needs.
In the near term, we expect to offer a deep-water piston pump, which will be capable of pumping from depths approaching 400 feet, as well as a desalinating piston pump to produce clean drinking water from salt water.
In areas where no electricity or fuels are available, Gravity Assisted Power can be the answer. Let gravity help you do the work.
The distance the piston moves varies based on the mode of operation and the Pressure/Volume (P/V) setting. The pendulum can be pushed in a gentle manner, describing a relatively low over and back succession of arcs. If compared to the face of a clock a good example would be from 4 o’clock to 8 o’clock and back again. This will produce about one half the pumped water that would result from a higher arc of 2 o’clock to 10 o’clock. If the pendulum is rotated 360 degrees or in a continuous spinning manner, it will pump the maximum amount of water for any given P/V setting.
There are four different P/V settings that can be selected depending on the desire of the operator. Changing from one setting to another is easy and takes only a few seconds. First, the pendulum must be stationary. Then, on top of the machine, above the Gravity Assisted Power label there is a device, which looks like a black box. Protruding from this device is a selector pin, which can be easily pulled out and removed and then inserted into another position. There are four positions to choose from and they are numbered one through four.
The effect of
moving the selector pin from one P/V position to
another is similar to shifting gears in a car.
Position one produces the highest pressure and lowest volume
of water. Position four produces the highest volume of
water at the lowest pressure. Positions two and three
are incremental changes in pressure and volume.
A complete Water Treatment
Facility
The machine can be set to produce only R/O water, regular drinking water or both types of clean water simultaneously. If desired, the machine can also be set to bypass all filtration and simply pump source water for irrigation, sanitation, fire fighting or storage in a settling tank.
Any of the four P/V positions can be used for the selector pin while pumping water for any of the conditions described above. A pressure gauge is provided on the outlet side of the pump and a pressure relief valve is provided on the R/O system. These do not need adjustment. By turning the R/O handle to the “on” position and swinging the pendulum, 60 to 70 psi will automatically be achieved. This is the recommended pressure for Reverse Osmosis and is pre-set at the factory. If the operator selects position one and operates the pendulum at a fairly low arc, the R/O system will produce very high grade water at full capacity. By pushing the pendulum at a higher arc, excess regular drinking water will also be automatically produced. Positions two, three or four will do the same thing, except they will produce more drinking water than position one. A small adult or a child can easily operate the pendulum in position one or two for an extended time, whereas positions three or four are a little more difficult to operate continuously and therefore are probably not well suited for a child to operate while producing R/O water.
If the operator does not wish to produce R/O grade water, a child or small adult can easily operate the machine in any of the four P/V positions because filtered drinking water or irrigation grade (non-drinking) water do not require as much pressure as R/O grade water.