COLCHESTER WATER FAN TWIN CITY FANS ADD LONGEVITY Case Study REPLACING AN OLD, RUSTED FAN UNIT When the Town of Colchester called Flow Tech looking for a replacement fan, they were in a precarious position. The aeration tank, serving a portion of the town’s public water supply, had been served by two galvanized steel fans for the past couple of decades. Two fans were used to offer a lead -lag scenario, providing a backu

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