Custom water filter GrahamTek

The PE devices were first sold commercially in 1998. The all-ceramic moving and mating parts of the PE have shown exceptionally low, and even zero wear in high-pressure SWRO brine applications and the material is not susceptible to the pitting and stress corrosion of steel and bronze components in similar applications. The slow rotating PE (1,500 RPM) has proven to be a low maintenance component in commercial desalination plants.

Since the PE transfers energy directly from the brine to the feed without high speed rotating shaft inefficiencies, the PE achieves actual efficiencies of 91 to 95 percent within a broad flow range.

Reduced energy and capital costs mean that for the first time ever it is possible to produce potable water from seawater at a cost below $1 per cubic meter in many locations worldwide.

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