Featuring a four-pump series, EZ, EWN, EHE, and EJ, E Series metering pumps are powered by advanced microprocessor-based electronics and superior mechanical design. E Series pumps, with capacities up to 20 GPH (76 l/h) and pressures to 290 psi (20 bar), these chemical metering pumps will fit most any industrial, municipal, or agricultural water or wastewater application. In addition, the entire E Series pump line is backed with a comprehensive 2-year warranty that covers the entire pump, including the liquid end and diaphragm. If you have any questions regarding our chemical metering pumps, feel free to get in contact with us at 508-429-1110, and we will be happy to assist! Walchem metering pumps are some of the highest-quality dosing pumps on the market today!