Automatic Float Sump Pump, 1/3 HP — 43 GPM Capacity
Our 3SEL Cast Iron Contractor Pump is a robust solution with key features. Its non-clogging vortex impeller efficiently passes ½” (13 mm) solids, ensuring reliable operation. The corrosion-resistant, powder-coated epoxy finish enhances durability.
With cast iron switch case, motor, and pump housing, this pump is designed for long life and quiet operation. The two-pole, float-operated switch adds to its efficiency, making it a dependable choice for various pumping needs.
Built to Last
Every M53 leaves the factory fully submerged in water and run against published performance specs before shipping. The impeller uses a vortex design that passes solids up to 1/2" without clogging — the size of debris typically found in a residential sump pit. Stainless steel hardware on the float guard, handle, and switch arm resists corrosion from the constant moisture exposure that degrades lesser pumps. The oil-filled motor controls operating temperature during extended run cycles.
| Specification | Value |
|---|---|
| Horsepower | 1/3 HP (0.3 HP) |
| Voltage | 115V, single phase |
| Max Flow | 43 GPM (163 LPM) |
| Max Head | 19.25 ft (5.9 m) |
| Discharge | 1.5" NPT |
| Solids Handling | Up to 1/2" (12 mm) |
| Cord Length | 9 ft (2.7 m) |
| Operation | Automatic float switch |
| Housing | Cast iron |
| Warranty | 1-year limited |
Installation
Lower the pump into the sump basin at the lowest point of the pit. Connect 1.5" NPT discharge line and route it to a drainage point away from the foundation. Confirm the float moves freely through its full range before plugging in. Test by pouring water into the pit until the float triggers, then verify the pump shuts off when the pit drains.
Ideal for residential basements, crawl spaces, and utility rooms subject to seasonal seepage or groundwater intrusion.