Little Giant GP Series grinder pumps from Franklin Electric operate across voltages ranging from 208 to 230 volts in one model. The GP-A (automatic) and GP-M (manual) versions’ powerful motor and construction are designed to handle the demands of low-pressure sewage applications, using a cutter system that operates at 414,000 cuts per minute. They incorporate a non-clogging impeller staged for efficient pumping of sewage slurries with a shut-off head of 130 feet. They are equipped to handle grinding domestic sewage whether as a replacement pump or a packaged system. Available in an automatic version for single-phase power sources and a manual version for both single-phase and three-phase power sources, they employ a 2 hp single-phase, 3,450 rpm with capacitor start/run motor that has built-in overload protection to prevent over-current and over-temperature damage. They have corrosion-resistant brass impellers that minimize downtime and maintenance and an epoxy-coated cast iron finish for corrosion resistance and durability. 260/824-2900; www.littlegiant.com.