Description
Little Giant 509412 9SC Series Submersible Sewage Pump | 4/10 HP, 115V, Cast Iron
The Little Giant 509412 (9SC Series) Submersible Sewage Pump is a trusted choice for residential sewage, effluent wastewater transfer, and dewatering applications. Engineered for reliability and built with a durable cast iron body, this automatic pump delivers continuous-duty performance while handling solids up to 2 inches in diameter.
Equipped with a 4/10 HP oil-cooled motor, a piggyback float switch, and a 2" FNPT discharge, the 9SC Series is designed for ease of installation and worry-free operation. With a flow rate of 100 GPM at 5 feet of head and a shut-off height of 20 feet, the 509412 is powerful enough for demanding residential sewage and wastewater applications, yet energy-efficient with a low amp draw.
Key Features & Benefits
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Powerful 4/10 HP Motor – Permanent split capacitor motor delivers reliable pumping power with lower amp draw.
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Automatic or Manual Operation – Includes piggyback float switch for versatile installation options.
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High Solids Handling – Passes solids up to 2" diameter with ease.
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Durable Cast Iron Construction – Built to withstand tough sewage and effluent applications.
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Continuous Duty Rated – Oil-cooled motor with thermal overload protection ensures long service life.
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High Flow Performance – Up to 100 GPM (6,000 GPH) at 5 ft of head, with 20 ft shut-off head.
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Extended Cord Length – Comes with a 20 ft SJTW power cord for flexible installation.
Performance Ratings
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Horsepower: 4/10 HP (0.4 HP)
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Voltage: 115 VAC, single-phase
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Amps (Full Load / Start): 8 A / 18.5 A
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Max Flow Rate: 100 GPM (6,000 GPH)
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Max Head Height: 20 ft
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Cord Length: 20 ft
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Duty Rating: Continuous duty, cCSAus approved
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Warranty: 36 months
Materials of Construction
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Pump Body/Base/Volute: Cast iron
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Impeller: Nylon vortex design (non-clogging)
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Motor Shaft: 420 stainless steel
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Fasteners: Stainless steel
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Bearings: Ball bearing, steel
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Seals: Carbon/ceramic, nitrile
Common Applications
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Residential sewage transfer
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Effluent wastewater handling
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Basement sewage ejector systems
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Dewatering in utility and sump pits
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Septic tank pumping to leach fields
A Reliable Sewage & Effluent Pump for Residential Systems
With its rugged cast iron build, powerful motor, and ability to handle solids up to 2 inches, the Little Giant 509412 9SC Series Sewage Pump is a dependable solution for sewage and wastewater transfer. Backed by a 3-year warranty, it’s designed to keep residential systems running smoothly with minimal maintenance.















