THE SINGLE SOURCE
It’s a reputation we are proud to have earned from our customers in the United States and around the world. We have earned it with our commitment to consistently provide our customers with prompt, courteous service and the highest quality products. Clack is a leader in Wisconsin blow molding and water treatment products. We manufacture high quality control valves and blow molded plastics.

Established in 1946, Clack Corporation has been providing quality industrial water treatment products, commercial water treatment equipment and molded custom plastic containers. As a leader in the manufacture and distribution of water treatment products and custom blow molded plastics, we are proud to offer quality solutions our customers can always rely on.