Spectra Technology Overview

Spectra technology is grounded in Energy Efficient Reverse Osmosis Desalination. Spectra has developed, patented, and manufactures two Energy Recovery High Pressure Pumps. The Pearson Pump and the Clark Pump. This proprietary pump technology enables Spectra to build desalination systems that are the most energy efficient units available today.


Spectra's Pearson Pump is an elegant new high pressure pump that has been developed by Spectra Watermakers, Inc. for energy efficient, reverse osmosis desalination.

The Pearson Pump is a breakthrough evolution and enhancement of reciprocating pump design. This unique high pressure pumping system combines feed stream pumping and energy recovery into a single unit. The "Energy Recovery" feature of the Pearson Pump takes the energy entrained in the brine reject stream from the RO membranes and recaptures up to 80%, dramatically increasing the overall efficiency, bringing energy requirements down to an impressive 9-11 Watt Hours per Gallon (2.6 KH per Cubic Meter), a major improvement for water desalination.

Click here to learn more about the Pearson Pump.


With a new process developed in 1997 and improved continually since then - The Spectra Clark Pump features a unique two stage pumping and pressurizing system. The first stage is a simple diaphragm or vane feed pump, which supplies raw water flow and pressure for pre-filtration, circulation, and the driving energy for the second stage, the Clark Pump. The Clark Pump is a unique pressure intensifier that uses two opposing cylinders and pistons that share a single rod.

Water pressure from the small feed pump is used by one of the cylinders to make theother pressurize and circulate the saltwater through the reverse osmosis membrane. Pressurization is achieved when the rod, as it is forced into a cylinder, displaces water in the closed loop circuit. The pressure instantly rises to the point where the displaced volume of water is forced out of the membrane as the fresh product. When a driving cylinder's piston touches the base, the process is instantly reversed.

Click here to learn more about the Clark Pump.



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