Colorado Springs, CO March 31, 2011

Velcon Filters, LLC, a Portfolio Company of The Sterling Group, Completes Acquisition of Twin Filters B.V.

Velcon Filters, LLC, a manufacturer of industrial filtration systems, today announced that it has acquired Twin Filters B.V. Velcon is a portfolio company of The Sterling Group and was acquired in 2009 as a platform to execute a buy-and-build strategy.

With headquarters in The Netherlands, Twin designs, engineers and manufactures filtration equipment and replacement cartridges for the oil, liquid and air filtration markets in Europe, Asia, North America and other international markets. Wijbrand Schouten, the founding CEO who will remain with Twin in his current role, commented, “Velcon is the clear leader in the jet fuel market, and we are pleased to combine our organizations to continue to deliver top quality products and solutions to our collective customer bases globally.”

Velcon manufactures filtration systems, including vessels and replacement cartridges, which meet specific requirements for fluid filtration processes in a variety of domestic and international end-markets, primarily the jet fuel market. Dave Taylor, President and CEO of Velcon, said, “Since 1985, Twin has provided the highest quality filtration devices for the oil, liquid and air filtration markets. We are pleased to partner with Wijbrand and his team at Twin and to provide a broader range of products and solutions to our customers.”

The acquisition of Twin represents an expansion into new end-markets and geographies. “Velcon acquired Chemflo in late 2009 to expand our product offering into the downstream energy markets, and now Twin provides significant growth opportunities in the upstream markets,” Greg Elliott, Partner of The Sterling Group said. “We are excited to capitalize on the synergies that Velcon and Twin’s collaboration will provide.” The acquisition was financed with equity from Sterling Group Partners II, L.P. and debt financing from BNP Paribas, Amegy Bank of Texas and D.E. Shaw.

About Velcon Filters, LLC
Velcon, headquartered in Colorado Springs, CO, manufactures housing vessels and replacement cartridges used in the filtration of industrial fluids. The company is a global leader in the filtration process for jet fuel delivery, manufacturing products that filter, purify and remove water from jet fuel. End users of Velcon’s products primarily include airports, contracted fuel providers, FBO operators, militaries and pipeline operators. Velcon Process manufactures filtration products for commercial and industrial diesel consumers, refineries, petrochemical facilities and utilities.

About The Sterling Group, L.P.
Founded in 1982, The Sterling Group is a private equity investment firm that targets controlling interests in basic manufacturing, distribution and industrial services companies. Typical enterprise values of these companies range from $100 million to $500 million. Sterling has sponsored the buyout of 39 platform companies and numerous add-on acquisitions for a total transaction value of approximately $9.0 billion. Currently, Sterling has $1.3 billion of committed capital under management through three funds. Current portfolio companies include North American Energy Partners, CST Industries, Roofing Supply Group, Universal Fiber Systems, Velcon Filters, Express, B&G Crane Service and Saxco International.