Since 1975, SJE Rhombus has grown to become a leading manufacturer of reliable, trouble-free liquid level controls for the water, wastewater, and sewage industries throughout the United States and Canada, as well as into global markets. For over 40 years, SJE Rhombus has been committed to providing engineering and manufacturing excellence to our customers. Our engineering expertise and broad range of core products uniquely positions the company to deliver the reliability and performance our customers require to solve their control solutions challenges.

SJE Rhombus is a brand of SJE Inc., a leading provider of control solutions for a range of environments.

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Our headquarters is located in Detroit Lakes, Minnesota, where we were founded over 40 years ago.

A Commitment to Quality

Quality is a central part of the entire SJE Rhombus business. We recognize that the highest quality standards in manufacturing are vital to our customers. By utilizing world-class quality management systems and practices, our customers have confidence in our ability to meet their compliance, reliability, and budgetary requirements. In addition, SJE Rhombus is so confident in the superior quality and performance of our controls that nearly every catalog product leaving the factory is backed by an industry-leading five-year limited warranty.

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