SPX was founded on December 20, 1911, in
Muskegon, Michigan, as the Piston Ring Company by Charles E. Johnson and Paul R. Beardsley. The company was entirely devoted to the production of piston rings of leading engine builders. After acquiring Accuralite Company in 1931, the company changed its name to Sealed Power Corporation and also started manufacturing piston rings, pistons and cylinder sleeves for various military applications. In 1985, Sealed Power expanded even further by acquiring the
Owatonna Tool Company (OTC) and its subsidiaries.
United Dominion Industries Limited, a manufacturer of engineered products, was acquired in 2001. SPX's headquarters relocated to Charlotte, North Carolina, in 2002. In 2015, SPX Flow was founded, a spin-off from its parent company. Led by Chris Kearney and Jeremy Smeltser, SPX Flow supplies highly engineered flow components, process equipment, and turn-key systems to food and beverage, power and energy, and industrial end markets. TSPX Flow was acquired by
Lone Star Funds for $3.8 billion in 2022. In December 2015, SPX announced that it would also acquire the marine and aviation warning-light corporation Carmanah Technologies. In 2019, the corporation acquired SGS Refrigeration Inc., a manufacturer and supplier of industrial refrigeration products, following its ongoing partnership since 2015. Patterson-Kelley was acquired that same year to join SPX's HVAC solutions division. In September 2020, SPX acquired ULC Robotics Inc., a developer of robotics systems and inspection technology for natural gas networks, in a $135 million deal. Sensors & Software Inc. was also acquired by SPX in November 2020. Sensors & Software Inc. is an
Ontario-based manufacturer and distributor of
Ground Penetrating Radar (GPR) products used for geotechnical and geological investigations, unexploded ordnance detection, and locating underground utilities. The company joined SPX's Radiodetection business unit. In February 2024, SPX expanded its
HVAC business by acquiring, Ingenia Technologies, a Canadian manufacturer of custom commercial air quality systems, headquartered in
Mirabel, Quebec, for $300 million. == References ==