SPX Corporation provides flow technology products, test and measurement products, thermal equipment and services, and industrial products and services worldwide. The companys Flow Technology segment provides products and solutions that are used to blend, meter, and transport fluids. This segment offers high-integrity pumps, valves, heat exchangers, fluid mixers, agitators, metering systems, and filters and dehydration equipment for food and beverage, oil and gas, power generation, chemical, mining, and general industrial industries. Its Test and Measurement segment provides diagnostic service tools, fare-collection systems, and portable cable and pipe locators for the transportation, telecommunications, and utility industries. The companys Thermal Equipment and Services segment engineers, manufactures, and services cooling, heating, and ventilation products, including dry, wet, and hybrid cooling systems for the power generation, refrigeration, HVAC, and industrial markets, as well as hydronic, and heating and ventilation products for the commercial and residential markets. This segment also provides thermal components and engineered services to power and steam generation plants. Its Industrial Products and Services segment designs, manufactures, and markets power transformers for utilities; industrial tools and hydraulic units, and precision machine components for the aerospace industry; crystal growing machines for the solar power generation; television, radio, and cell phone and data transmission broadcast antenna systems; communications and signal monitoring systems; and precision controlled industrial ovens and chambers. The company sells its products through stocking distributors, manufacturing representatives, third-party distributors, direct sales, and retailers. It was formerly known as Piston Ring Company and changed its name to SPX Corporation in 1988. SPX Corporation was founded in 1911 and is headquartered in Charlotte, North Carolina.