Grundfos designs new ultrafiltration booster

US-based pump manufacturer Grundfos Pumps has designed a new lightweight ultrafiltration booster that is suitable for high flow and pressure applications in industrial and wastewater systems.

The BMS is 75% lighter than its predecessor, and includes a permanent magnet motor that is capable of speeds between 4,000 and 5,500 rotations a minute.

According to the company, motor speed is controlled by a variable frequency drive which consistently operates at the optimal duty point.

The BMS booster can be used for reverse osmosis, filtration and ultrafiltration, pressure boosting and water supply for industrial and municipal waste treatment systems.

The features of the new booster include direct spline coupling to eliminate maintenance of the V-belt drive and oil system. All critical components are super duplex stainless steel suitable for use in seawater and brackish water applications.

The shaft seal is made by using carbon or silicon carbide to withstand high pressure, and thrust-bearing material with ceramic and carbon.

Grundfos Industry business development director Harland Pond said the BMS’s new features significantly reduce maintenance hassle and pump downtime.

"It is built on the principles of durability and reliability, and has passed rigorous tests in a number of different environments," Pond added.

Grundfos will showcase the new booster at the American Water Works Association’s 2014 Conference and Exposition in Boston from 8 to 12 June.

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Image: New lightweight ultrafiltration booster BMS. Photo: courtesy of Grundfos Pumps Corporation.