Head-to-Head Comparison · 1/3 HP Class
Liberty Pumps 257 1/3 HP Cast Iron Sump Pump vs. Superior Pump 92341 1/3 HP Cast Iron Sump Pump with Vertical Switch (standard)
Engineering comparison between the Liberty Pumps 257 1/3 HP Cast Iron Sump Pump and Superior Pump 92341 1/3 HP Cast Iron Sump Pump with Vertical Switch (standard). Flow curves, switch durability, and technical verdict.
92341 1/3 HP Cast Iron Sump Pump with Vertical Switch (standard)
The Liberty Pumps 257 1/3 HP Cast Iron Sump Pump delivers 2,040 GPH at 10' head compared to 2,220 GPH for the Superior Pump 92341 1/3 HP Cast Iron Sump Pump with Vertical Switch (standard). If your basement requires maximum flow throughput, the Superior Pump holds the hydraulic advantage. For tight sump pits, compare the minimum basin clearances: 10" vs 11".
Specification Comparison Matrix
| Specification | Liberty Pumps 257 1/3 HP Cast Iron Sump Pump | Superior Pump 92341 1/3 HP Cast Iron Sump Pump with Vertical Switch (standard) | Advantage |
|---|---|---|---|
| Discharge Flow @ 10' Head | 2,040 GPH | 2,220 GPH | Superior Pump +180 GPH |
| Shut-Off Head | 21.0 ft | 24.0 ft | Superior Pump +3.0 ft |
| Switch Mechanism | VMF Magnetically-Coupled Vertical Float | Vertical Mechanical Float | Vertical Clearance |
| Housing Material | Class 25 Cast Iron | Solid Cast Iron | Thermal Heat Sink |
| Minimum Basin Diameter | 10" | 11" | Basin Fit |
| List Price | $264.00 | $149.00 | Lower Initial Cost |
Choose 257 1/3 HP Cast Iron Sump Pump If:
- You require 2,040 GPH discharge capacity at standard 10' head.
- Your installation prioritizes Class 25 Cast Iron for continuous motor heat dissipation.
- You prefer the VMF Magnetically-Coupled Vertical Float switch mechanism.
Choose 92341 1/3 HP Cast Iron Sump Pump with Vertical Switch (standard) If:
- You need 2,220 GPH flow capacity at 10' dynamic head.
- Your sump pit accommodates a 11" clearance footprint.
- You favor the Vertical Mechanical Float actuation design.
Hydraulic Performance & Head Sizing
When operating at 10 feet of Total Dynamic Head, the Liberty Pumps 257 delivers 2,040 GPH versus 2,220 GPH for the Superior Pump 92341-STANDARD. Pumping capacity curves indicate that both models handle standard residential foundation drainage effortlessly.
Switch Technology & Pit Clearance
The Liberty Pumps employs a VMF Magnetically-Coupled Vertical Float requiring a 10" pit, whereas the Superior Pump utilizes a Vertical Mechanical Float suited for basins with at least 11" clearance. Ensuring your pit allows uninhibited float movement is essential to preventing switch hang-ups.