KSB AG engages in the manufacture of industrial and building pumps, valves, and related systems. It operates through the following segments: Pumps, Valves, and Service. The Pumps segment covers single and multistage pumps, submersible pumps, and associated control and drive systems. The Valves segment includes butterfly, globe, gate, control, diaphragm and ball valves, and associate actuators and control systems. The Service segment encompasses installation, commissioning, start-up, inspection, servicing, maintenance and repair of pumps, related systems and valves, modular service concepts, and system analyses. The company was founded by Johannes Klein, Friedrich Schanzlin, and Jakob Becker in 1871 and is headquartered in Frankenthal, Germany.