Goulds 1GD Dual Seal Submersible Grinder PumpThis pump is capable of grinding domestic and commercial raw sewage with a maximum solid capability of 3 inches in size. It is designed for high head sewage applications where a gravity system is not practical. Ideal for pressure sewage systems.FeaturesSilicon bronze, multi-vane semi-open impeller, with pump-out vanes for mechanical seal protectionGrinder cutter system with anti-roping design, hardened cutter is keyed to the motor shaft for positive driveCutter ring is specially designed to be reversed when the first side wears out thus doubling its life and reducing maintenance costs. The cutter system is designed and tested to pass items found in normal wastewaterHeavy duty cast iron, volute type for maximum efficiencyDual mechanical seals with silicon carbide vs. silicon carbide outer seal and ceramic vs. carbon inner seal, stainless steel metal parts, BUNA-N elastomersOptional seal sensor probe located in oil-filled chamber. If pumpage should begin to leak past lower seal it indicates to pump control panel a fault has occurred. Requires optional seal fail circuit in the control panelStainless steel shaft and fastenersMotor is rated for continuous duty fully submergedStart capacitor, run capacitor and starting relay are required and will be located in the control panel