Duyar was founded in Istanbul in 1965. Today, Duyar is one of Turkey's leading HVAC Valves, plumbing, and fire protection systems manufacturing companies. All production facilities like casting, machining, assembling, testing, and painting are made in Duyar's plants. Duyar's main factory is based on an area of 15.000 square meters in Esenyurt, Istanbul. Duyar's casting factory is based on 8.000 square meters in Gurpınar, Istanbul, and Duyar's sprinkler production facility, produces Turkey's first FM-approved, UL Listed sprinkler heads. Thus, quality is obtained in every production phase.