158 GPM Semi-Trash Pump
The Generac ST20-S Semi-Trash Pump is a dependable solution for handling muddy, sandy, or sediment-filled water. Capable of pumping up to 158 gallons per minute, this unit is powered by a robust 169cc Generac G-Force OHV engine and built with a heavy-duty steel frame to withstand tough jobsite conditions. With a 2-inch intake and discharge, it’s perfect for contractors, property managers, and emergency dewatering applications.
Key Benefits of the 158 GPM Semi-Trash Pump
- Moves up to 158 gallons per minute (598 LPM)
- 2-inch suction and discharge ports with color-coded identification
- Durable 1-inch steel frame for jobsite durability
- 3-gallon steel fuel tank provides up to 5 hours of run time
- Silicon carbide mechanical seal for extended service life
Common Applications
- Light construction site dewatering
- Removing sediment and sandy water
- Rental and property maintenance
- Floodwater transfer and emergency use
Packaging & Durability
The ST20-S features a fully integrated frame, onboard instructions, Easy Prime™ funnel design for simplified setup, and low-oil shutdown protection. Its lightweight yet rugged build makes it reliable for recurring use on demanding jobsites.
Product Properties
| Property | Value |
|---|---|
| Flow Rate | 158 GPM (598 LPM) |
| Intake/Discharge Size | 2 in. (50.8 mm) |
| Engine | Generac G-Force 169cc OHV |
| Fuel Tank | 3 gallons, up to 5-hour runtime |
| Frame | 1-inch steel frame, jobsite-ready |
Need higher output for heavy-duty dewatering? See the Generac XC3000P Trash Pump. For more water solutions, visit Generac.com.
