ARCA dates back to 1917, when Ragnar Carlstedt files his first patent for the nozzle-flapper system in Sweden. One year later, ARCA Regler AG is founded there, with Berlin to follow in 1922. In 1949, after the war, the company is refounded in Tönisvorst by Dr. Ing. Ludwig Kaspers and Adolf Paulsen and operates under the name ARCA Regler GmbH. Characterized by dynamic expansion, ARCA has no plans of slowing down in the future. In 1970, the company expands by adding a second production facility in the Eifel region. In 1979, Dr. Ing. Rüdiger Kaspers, MBA, is appointed as the managing director of ARCA and in the 1990s, Heinz M. Nägel advances the innovative development program of the ARCA Flow Group as technical officer. The international activities of ARCA start in the mid-1980s, when ARCA Controls Ltd. is founded in India as part of a joint venture with Forbes Marshall. In 1987, the company embarks on a successful collaborative venture with SAM YANG Valve Co. Ltd. In South Korea. In 1994, a cooperative agreement is concluded with von Rohr Armaturen AG in Switzerland and with Von Rohr ARCA BV in the Netherlands. In 1995, ARCA enters the Chinese market with its first licensee. Today, the company has its own subsidiary there. Growth continues in the 21st century when FELUWA Pumpen GmbH joins the ARCA Flow Group in 2000. Swiss-based WEKA AG, a recognized manufacturer of cryogenic valves and level-measuring systems, follows one year later. The latest member of the ARCA Flow Group is ARTES Valve & Service GmbH in Berlin, which rounds off the product portfolio with steam desuperheaters and regulation ball valves. In 2015, the company opened its US subsidiary ARCA Flow Controls, LLC at Houston, Texas.