Having been established in 1979 in Istanbul, our firm Gürmaksan Hidrolik Devre Elemanları San. Ve Tic. Ltd Şti. started to manufacture industrial hydraulic pressure and flow valves. Gürmaksan, one of the leading firms in the sector, expanded its product range in time by including the mobile hydraulic directional control valves. Blazing a trail, our firm commenced manufacturing Closed Cycle Servo Valve in 2005.