The E/One 2000i Series: Features & Benefits

The GP 2000i grinder pump station has evolved from everything we've learned in more than 35 years of engineering low pressure sewer systems. The pump stations incorporate the grinder pump, motor control and level sensing device integrated into a compact unit, easily removable for servicing when necessary.

The progressing cavity pump itself is based on the Moineau principle. A rotor turns within a stator, creating a sequence of sealed chambers. The precision cast and polished stainless steel rotor moves wastewater through these chambers at a nearly constant flow, over a wide range of conditions - from negative to abnormally high heads. Turning at just 1440 rpm, the one horsepower motor can pump fluid through miles of small-diameter piping and elevation changes of over 45 meters.

In addition, the geometry of the pump not only produces a near-vertical pump curve, but allows passage of round solids without clogging. Because of the low rpm and highest quality components, we experience the lowest service call rate in the industry. Average mean time between service calls is eight to 10 years. Some key advantages:

• High Heads/Negative Heads. Reliable operation from negative head to 45 meters of total head for continuous duty reduces the number of lift stations and pipe sizes. This cuts costs — both initially and in long-term operation and maintenance.

• Constant Flow. The systems pressurises to be overcome by any given grinder pump in a low-pressure system vary dramatically over the course of a day. Only E/One's progressing cavity pump readily accommodates these pressure variations while maintaining a nearly constant flow without ever operating at "near shut off" - thus avoiding the wear and motor burn-out suffered by other pump types.

• High Grinding Torque. Our unique pump system, driven by a one-horsepower motor turning at 1440 rpm, produces grinding torque equal to a two-horsepower pump turning at twice the speed.

• Low Energy Consumption. Pump is activated automatically. Runs for short periods. Typical annual energy consumption equals a 40-watt light bulb.

• Low Maintenance Submersible Motor. Low maintenance and long life are the hallmarks of our air-filled motor. Permanently lubricated ball bearings and Class F insulation eliminate the need for periodic oil changes and oil disposal costs required by oil-filled submersible motors.

• Large Diameter Grinder Assembly. Almost twice the diameter of most other types of pumps, contributing to a dramatic reduction of inflow velocity for less wear and no clogging or jamming.

• No Preventive Maintenance. Self-cleaning static level sensors require no preventive maintenance. Because of our unique, near constant discharge rate, no main line flushing is required in a properly designed system.

• Corrosion Resistance. E/One's stainless steel ball type discharge valve and piping won't corrode like copper or galvanized, and hold up years longer. No corrosion, no maintenance.

• Dependability. E/One pumps typically run eight to 10 years between service calls with more than 35 years of in-ground experience.

• Environmentally Sound. The GP 2000i grinds waste material into small particles. This enables the use of inexpensive, small-diameter pressure pipes, buried at shallow depths, to transport wastewater to a suitable processing site. Result: Ground water contamination from failing septic tanks can be eliminated.

• Serviceability. Our unique core design eliminates the need for in-field troubleshooting and pump servicing. This means lower maintenance costs and minimum homeowner inconvenience. Engineered low-pressure systems: repealing the law of gravity.

Gravity sewers are no longer the rule for solving wastewater problems. With huge savings in front-end costs, and a much gentler footprint on the environment, gravity-independent E/One low-pressure sewer systems are revolutionising the field.

At the heart of the system is the E/One progressing cavity grinder pump - with high heads that eliminate costly lift stations, and a robust, powerful design that translates into the industry's highest levels of reliability, availability and maintainability.

And nobody can touch the E/One curve. Click here to check it out (PDF file).

In a low-pressure system, constant, predictable pump output is the foundation for proper hydraulic design. It enables the engineer to minimise retention time, pump wear, and keep scouring action at effective levels.

E/One's semi-positive displacement, progressing cavity pump has a nearly vertical H-Q curve. It is by far the most "forgiving" pump design - providing predictable flow over the full range of typical system pressures; strengths critical in a large-scale, low-pressure sewer. E/One's superior high head capability allows a system with few, if any, lift stations. And, it easily accommodates additional future connections without compromising system performance.

These E/One pump characteristics translate into:

• Predictable hydraulic design
• Low collection system capital costs
• Less maintenance
• Lower operating costs

Leading the industry we invented.

E/One not only pioneered the low-pressure sewer system, but consistently leads the industry both in sales and innovation. The company is dedicated to Total Quality and Continuous Improvement, as evidenced by the GP 2000i Series. Today, there are more than a half million users worldwide.

Driven by the remarkable GP 2000i grinder pump, E/One Sewers give engineers, developers, sanitarians, and land planners unprecedented new freedom in land usage. And they're so much easier to install. Front-end costs are reduced by as much as 70 percent.

The GP 2000i System reduced all forms of sanitary waste to a non-clogging slurry and pumps it through a network of small-diameter pipes. Since gravity is replaced by the power of the pump, sewer systems need not run downhill nor require large-diameter pipes, deep trenches, multiple booster stations - or their associated costs.

A system powered by the GP 2000i pump converts formerly cost-prohibitive building sites into cost-effective reality. "Problem areas," with high ground water, elevation changes or impenetrable bedrock, are transformed into valuable, developable real estate.

Of course, E/One's low upfront cost advantages apply to conventional building sites as well. In addition, E/One units are easy to install and virtually maintenance-free, refined through more than 35 years experience with the largest installed base in the industry.