Walchem, an Iwaki America Incorporated Company Walchem is a leading manufacturer of analytical instruments and sensors for the global water and wastewater treatment markets. Walchem has the unique ability to integrate its measurement, control, and chemical pumping technologies with advanced data communications capabilities to provide innovative and reliable solutions for a broad range of water treatment applications. Their success is driven by three tenets: Advanced technology Quality customer service Development of a superior work force Walchem and Iwaki have over 100 years of combined metering pump experience. This partnership has resulted in the development of the world's most advanced line of chemical metering pumps, the E-Class. Featuring five great pump series, E-Class pumps are powered by advanced microprocessor electronics and superior mechanical design. There's an E-Class pump for most any commercial, industrial, agricultural, or municipal chemical feed application. The entire E-Class family is backed by a comprehensive 2-year warranty.