Peter Sindlhauser

AUMA Riester GmbH & Co. KG engages in the design, development and manufacture of electric actuators as well as valve gearboxes. Its products include multi-turn and part-turn, linear actuators, multi-turn and part-turn gearboxes, controls and communication systems. It also offers automation of all valve types solution. The firm serves water, energy, oil and gas, and industry markets. The company was founded by Werner Riester and Rudolf Dinse in 1964 and is headquartered in Müllheim, Germany.

Culmus Grundstücksgesellschaft mbH manufactures pump and pumping equipment. The company was founded by Richard Halm in 1957 and is headquartered in Baltmannsweiler, Germany.

AUMA Motors + Systems GmbH engages in the manufacture and distribution of circulator pumps as well as drive technologies. Its product portfolio includes heating circulation and solar pumps, drinking water circulators, built-in motors, and small engines. The company was founded by Richard Halm in 1957 and is headquartered in Baltmannsweiler, Germany.

Auma - Armaturenantriebe GmbH is a company based in Muellheim, Germany. The German company manufactures and distributes valves and machine drives. It was founded in 1976 and is led by CEOs Ferdinand Maria Dirnhofer and Jörg Hoffmann.

Part of EWD Eisenwerke Verwaltungs GmbH, Düker GmbH is a company based in Karlstadt am Main, Germany. Düker GmbH specializes in providing fire protection with cast iron drainage pipe systems, cast iron installation, and mixed installation. The German company offers approved solutions for practice and the culvert ventilation valve actively protects water supply lines from air accumulation, negative pressure, and pressure surges. Düker GmbH is a reliable partner for flow control and drainage, offering sustainable premium solutions, products, and services for everything related to water. The company also provides job advertisements and services on their website dueker.de. The company was founded in 1913. Oliver Kraxner has been the CEO of the company since 2018.