Heavy-duty submersible pumps designed to handle raw sewage with large solids passage capability. Ideal for municipal lift stations and high-flow commercial applications.
Sewage ejector pumps are robust submersible pumps specifically designed to handle raw wastewater containing solids, debris, and fibrous materials. Unlike grinder pumps that cut solids into smaller pieces, sewage ejector pumps are engineered to pass large solids intact through specially designed impellers and volutes.
These pumps excel in municipal lift stations, commercial buildings, and industrial applications where reliable handling of unscreened wastewater is critical. Their non-clog impeller designs and generous flow passages make them ideal for applications with unpredictable solids content and varying flow conditions.
Open or semi-open impeller designs allow 2-3 inch spherical solids to pass without jamming or damage.
Generous volute and discharge dimensions prevent clogging from fibrous materials and debris.
Cast iron construction with hardened wear surfaces for long service life in abrasive applications.
IP68 rated motor with oil-filled seal chamber for reliable submersible operation.
| Flow Rates | 50-2,000 GPM Municipal applications: 200-1,500 GPM typical |
| Head Capacity | Up to 150 feet total head Typical range: 20-100 feet |
| Solids Handling | 2-3 inches spherical solids No cutting or grinding action |
| Motor Sizes | 5-150 HP (municipal: 25-100 HP typical) Three-phase standard for commercial |
| Pump Casing | Close-grained cast iron Optional 316 stainless steel |
| Impeller | Cast iron or stainless steel Open or semi-open design |
| Shaft | 416 stainless steel Oversized for durability |
| Sealing System | Double mechanical seals Silicon carbide faces standard |
Primary application for municipal sewage collection systems, handling flows from 200-2,000 GPM with reliable solids passage.
Raw sewage pumping at treatment facilities before screening and primary treatment processes.
Office complexes, shopping centers, and mixed-use developments requiring reliable sewage ejection.
Manufacturing plants and processing facilities with process wastewater and sanitary waste.
| Feature | Sewage Ejector Pumps | Grinder Pumps |
|---|---|---|
| Solids Handling | Pass 2-3" solids intact | Cut solids to 1/4" particles |
| Flow Range | 50-2,000 GPM | 10-150 GPM typically |
| Best Applications | Municipal, large commercial | Residential, small commercial |
| Clog Resistance | High (large passages) | Very high (cutting action) |
| Energy Efficiency | Higher (no cutting energy) | Lower (energy for cutting) |
| Maintenance | Lower (fewer moving parts) | Higher (cutting system wear) |
Our engineering team provides expert consultation on sewage ejector pump selection for municipal and commercial applications. Get personalized recommendations based on your flow requirements and system constraints.