Since more than a century, ATB RIVA CALZONI is providing Steel Penstocks and Hydromechanical Equipment for hydraulic and hydroelectric projects all over the world. Thanks to his long experience, ATB RIVA CALZONI is nowadays among the most qualified international companies for the turn-key supply of the following equipment: Steel penstocks, linings, bifurcations and manifolds; Butterfly valves, dissipating and regulating valves; Spillway and outlet radial gates, fixed-wheel gates, sliding gates, complete of operation and control equipment and Trashracks and trashrakes.