Travessa Do Milão 3800-235  Aveiro Portugal
+351 234 300 200


OLI - Sistemas Sanitários, S.A., founded in 1954 in Aveiro, is currently the Iberian leader in the production of cisterns. A wide range of solutions, such as control plates, in-wall and exposed flushing cisterns, and mechanisms (inlet valves and outlet valves) are sent daily to 80 countries on five continents. In addition, OLI has branches in Italy, Germany, Russia and Spain. From its large and modern industrial complex, in Aveiro, which operates 24 hours a day and seven days a week, 2 million cisterns and 2.8 million mechanisms are produced each year. In 2021, OLI closed the year with a turnover of 70,4 million euros and a total of 424 employees in Portugal. OLI is part of the Italian group Silmar, which operates in 5 different yet integrated sectors: heating, aluminium processing, plumbing, electroplating and passive fire protection - and employs about 3,000 people. OLI flushing cisterns can be found in bathrooms all over the world. A hotel in Cuba, an Israeli hospital, a school in Spain, a football stadium in Qatar, a boat Hotel in Peru or a restaurant in Italy, are just a few examples of landmark projects where OLI products are present. This international recognition is based on innovation, through designing unique technical and user friendly solutions. OLI´s innovative work has been recognized with several distinctions, namely "RedDot Design", "IF Design",  "Archiproducts Design Awards", "Good Design", "Iconic Awards" and "Design Plus".




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Red Dot Design Award - Less is More

IF Design Award - Less is More

Archiproducts Design Award - Less is More