Swuanee-based Control Southern Inc., a provider of process control products and services, will acquire MacAljon Valve Services of Savannah, which assembles and repairs safety relief valves, the companies announced Friday.

Terms of the deal were not disclosed.

Control Southern’s Mechanical Services division is expanding into non-control valve mechanical services, an area that MacAljon Valve Services specializes. The Savannah company’s staff will be retained by Control Southern, according to Geo Strategy Partners, the consulting firm on the deal.

Doug Turner, president of Control Southern, said in a statement the acquisition will allow the company to supply “every valve product and valve repair service required for a plant or mill.”

Control Southern’s customers include pulp and paper, power, chemical, natural gas, textiles, life sciences, and food and beverage companies.

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