Liberty 257 250 Series Cast Iron Sump/ Effluent Pump 1/3 HP with VMF Float
The Workhorse Sump Pump for Narrow Pits: Liberty 257 1/3 HP
The Liberty 257 is part of the 250-Series “workhorse” line, featuring a **Vertical Magnetic Float (VMF)** switch that allows reliable operation in tighter sump pits. With the same robust cast iron body, vortex impeller, and corrosion-resistant finish, the 257 is a premium choice for dependable dewatering.
Key Features & Benefits
- VMF vertical magnetic float — ideal for smaller or narrow pit applications
- One-piece cast body, epoxy powder coated for durability
- Vortex impeller with 1½ discharge and ½ solids handling capacity
- Quick-disconnect power cord for easy removal or replacement
- Thermal overload protection and sealed motor system for reliability
Specifications
| Model | 257 |
| Horsepower / Voltage | 1/3 HP, 115 V (standard) |
| Flow & Head | ~40 GPM @ 10 ft head, shut-off ~23 ft |
| Discharge | 1½ FNPT |
| Max Solids | ½ |
With its VMF switch and rugged build, the 257 is a top pick for sump pits where space is constrained or float action is critical.
Product Information
Product Information
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Shipping & Returns

Liberty 257 250 Series Cast Iron Sump/ Effluent Pump 1/3 HP with VMF Float
Liberty 257 250 Series Cast Iron Sump/ Effluent Pump 1/3 HP with VMF Float
The Workhorse Sump Pump for Narrow Pits: Liberty 257 1/3 HP
The Liberty 257 is part of the 250-Series “workhorse” line, featuring a **Vertical Magnetic Float (VMF)** switch that allows reliable operation in tighter sump pits. With the same robust cast iron body, vortex impeller, and corrosion-resistant finish, the 257 is a premium choice for dependable dewatering.
Key Features & Benefits
- VMF vertical magnetic float — ideal for smaller or narrow pit applications
- One-piece cast body, epoxy powder coated for durability
- Vortex impeller with 1½ discharge and ½ solids handling capacity
- Quick-disconnect power cord for easy removal or replacement
- Thermal overload protection and sealed motor system for reliability
Specifications
| Model | 257 |
| Horsepower / Voltage | 1/3 HP, 115 V (standard) |
| Flow & Head | ~40 GPM @ 10 ft head, shut-off ~23 ft |
| Discharge | 1½ FNPT |
| Max Solids | ½ |
With its VMF switch and rugged build, the 257 is a top pick for sump pits where space is constrained or float action is critical.
Original: $210.75
-65%$210.75
$73.76Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Workhorse Sump Pump for Narrow Pits: Liberty 257 1/3 HP
The Liberty 257 is part of the 250-Series “workhorse” line, featuring a **Vertical Magnetic Float (VMF)** switch that allows reliable operation in tighter sump pits. With the same robust cast iron body, vortex impeller, and corrosion-resistant finish, the 257 is a premium choice for dependable dewatering.
Key Features & Benefits
- VMF vertical magnetic float — ideal for smaller or narrow pit applications
- One-piece cast body, epoxy powder coated for durability
- Vortex impeller with 1½ discharge and ½ solids handling capacity
- Quick-disconnect power cord for easy removal or replacement
- Thermal overload protection and sealed motor system for reliability
Specifications
| Model | 257 |
| Horsepower / Voltage | 1/3 HP, 115 V (standard) |
| Flow & Head | ~40 GPM @ 10 ft head, shut-off ~23 ft |
| Discharge | 1½ FNPT |
| Max Solids | ½ |
With its VMF switch and rugged build, the 257 is a top pick for sump pits where space is constrained or float action is critical.












