Grundfos' CHIE is a compact horizontal multistage pump with built-in variable speed motor. MLE-integrated variable-speed motors enable pumps to work efficiently during variable demands and can switch the pump off at no-flow conditions. The CHIE range is 0-70 gpm and pressure boost up to 260 feet of head. This product is well-suited to OEMs and industry for a variety of applications: water treatment, water supply, heating, cooling and air conditioning systems. Grundfos. Circle 1.