Robbins & Myers, Inc., together with its subsidiaries, engages in the design, manufacture, and marketing of engineered, application-critical equipment and systems worldwide. The company’s Energy Services segment designs, manufactures, markets, repairs, and services equipment and systems used in upstream oil and gas exploration and recovery, production and completion, pipeline transmission infrastructure, and various other industrial applications. Its products and systems include power sections for drilling motors, blow-out preventers, down-hole progressing cavity pumps, drive systems and automation, wellhead equipment, frac manifolds and trees, high pressure engineered gate valves, and a line of ancillary equipment for the energy sector, such as rod guides, rod and tubing rotators, pipeline closure products, and valves. The Energy Services segment sells its products under the Robbins & Myers Energy Systems and T-3 brands. Its Process & Flow Control segment designs, manufactures, and services glass-lined reactors and storage vessels, customized equipment and systems and customized fluoropolymer-lined fittings, progressing cavity pumps for industrial applications and surface transfer of viscous fluids, mixing equipment, and engineered systems used to filter and process various liquids and materials, as well as complementary products, such as grinders and customized fluid-agitation equipment and systems, vessels, and accessories. This segment also provides alloy steel vessels, heat exchangers, other fluid systems, wiped film evaporators, and packaged process systems. It offers its products to the industrial, chemical, pharmaceutical, wastewater treatment, food and beverage, and specialty chemical markets under the Pfaudler, Moyno, Chemineer, and Edlon. The company was founded in 1878 and is based in Willis, Texas. As of February 20, 2013, Robbins & Myers Inc. operates as a subsidiary of National Oilwell Varco, Inc.