Since 1975, SJE (S.J. Electro Systems, Inc.) has built a reputation as a world leader, providing trouble-free liquid level controls for water, wastewater, sump, and sewage systems. With the creation of the Rhombus (R) Technology division in 1991, SJE-Rhombus now represents the most reliable integration of liquid level controls and motor control panels in the industry. SJE-Rhombus (R) pump ...