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GP Series grinder pump models now operate across voltages ranging from 208 V to 230 V in one model. The GP‐A (automatic) and GP‐M (manual) versions’ powerful motor and construction are designed to handle demands of low pressure sewage applications. Units incorporate a non-clogging impeller staged for efficient pumping of sewage slurries with a shut-off head of 130'. Available in an automatic for single-phase power sources and a manual version for both single-phase and three-phase power sources, the GP-A and GP-M employ a powerful 2 hp single-phase, 3450 rpm with capacitor start/run motor with built-in overload protection to prevent over-current and over-temperature damage. Other features include corrosion-resistant brass impellers.