Flowserve Corporation (www.flowserve.com), a provider of flow control products and services for the global infrastructure markets, today announced it acquired privately owned CALDER AG (www.calder.ch), a Swiss manufacturer of desalination equipment. Terms of the transaction were not disclosed.

CALDER AG specializes in the design, engineering and supply of energy-recovery equipment and related proprietary technologies for the reverse-osmosis process used in desalination. Energy-recovery equipment for desalination captures and reuses waste energy, which significantly lowers net energy consumption of the process.

Based in Egliswil, Switzerland, the CALDER product line includes Pelton Turbines and Dweer Recovery Devices. CALDER AG generated about $23 million in revenue in 2008.

Flowserve Pump Division supplies high-corrosion resistant, energy-efficient systems for both the thermal and reverse-osmosis desalination processes.