Our verdict
They aren't interchangeable. Pick the M267 Waste-Mate for a basement bathroom: it passes 2 in solids and goes in a sealed, vented basin. Pick the M98 Flow-Mate for groundwater in an open sump pit.
The central trade-off
Job. The M267 handles sewage and effluent; the M98 handles clear groundwater.
Solids. The M267 passes 2 in spherical solids.
Installation. Sewage ejectors need a sealed, vented basin and usually a licensed plumber.
Side by side
| Specification | Zoeller M267 Waste-Mate Sewage Pump | Zoeller M98 Flow-Mate Sump Pump |
|---|---|---|
| Horsepower | 1/2 HP | 1/2 HP |
| Max flow (maker) | 125 GPM | 72 GPM |
| Max head (maker) | 21.5 ft | 23 ft |
| Switch | Not stated by the maker | Not stated by the maker |
| Housing | cast iron | Cast Iron |
| Discharge | Not stated by the maker | Not stated by the maker |
| Power cord | Not stated by the maker | 9 foot cord |
| Weight | 35.8 lb | 14.1 kg |
| Warranty | Not stated by the maker | 12 months from installation or 18 months from manufacture, whichever comes first |
Values are the makers' published specifications. "Not stated" means the maker doesn't publish it.
Which should you choose?
Choose the Zoeller M267 Waste-Mate Sewage Pump if
- You're pumping a toilet or bathroom
- You have a sealed sewage basin
Choose the Zoeller M98 Flow-Mate Sump Pump if
- You're pumping groundwater
- You have an open sump pit