Why it matters
The M57 pairs Zoeller's oil-filled, cast iron Mighty-Mate with a built-in snap-action float switch. The polypropylene float is solid, so it can't become waterlogged.
Zoeller rates it at up to 2,580 GPH, with stainless steel hardware, float guard and switch arm and a non-clogging cast iron vortex impeller.
Who it's for, and who should skip it
Good fit if
- Average basement pits
- Owners who want a sturdy switch
- Zoeller replacements
Look elsewhere if
- Sewage or toilet waste
- Draining pools or floors (a utility pump is cheaper)
- Homes that need a backup but have only one pump
Pros and cons
Pros
- Snap-action switch
- Solid float
- Oil-filled cast iron
Cons
- Lower flow
- Price
- Needs pit room for the float
Limitations to weigh
- Check your pit diameter against the switch: vertical floats fit narrow pits, tethered floats need room to swing.
- Fit a check valve on the discharge so water in the pipe doesn't fall back into the pit after each cycle.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Material | Cast Iron | Retailer |
|---|---|---|
| Product weight | 27.1 lb | Retailer |
| Max flow (maker) | 43 GPM | Retailer |
| Max head / lift (maker) | 19.25 ft | Retailer |
| Voltage | 115 V AC | Retailer |
| Model number | 57-0001 | Retailer |
| Housing | cast iron | Retailer |
Alternatives worth comparing
More sump pumps we cover
- Wayne CDU1000 Sump Pump
- Liberty Pumps 287 Sump Pump
- Zoeller M98 Flow-Mate Sump Pump
- Red Lion RL-SP33PED Pedestal Sump Pump
All sump pumps, compared in one table · Every Zoeller product we cover
Final verdict
A well-built Zoeller for average water.
Where to buy
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