Superior Pump 93511 (Vertical Float)
#11 in Up to 1/2 HPFull review
For a budget sewage pump in a tight basin where a tethered float would not swing freely.
Amazon $251.03$251.03
2.5/5
For the cheapest cast iron replacement where the lift to the sewer is short. A longer lift calls for a stronger 1/2 HP pump.
- 54 gpmFlow at 10 ft
- 2 inSolids
- 1/2 HPMotor
- PiggybackSwitch
Check price at Amazon$192.52
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Lowest price here for a cast iron sewage pump
- Sold by Amazon, so returns are simple
- Light at 26 lb, easy to lower into a basin alone
Cons
- Only 54 gpm at 10 ft and nothing at 20 ft, so it needs a short lift
- Short 8 ft cord and one year warranty
- Wayne does not publish its amp draw or shutoff head
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its motor size. How we rank explains each one.
Specifications
| Model number | RPP50 |
|---|---|
| Pumping | |
| Motor | 1/2 HP |
| Flow at 10 ft | 54 gpm |
| Solids | 2 in |
| Discharge | 2 in |
| Switch | Piggyback |
| Build | |
| Cast iron | Yes |
| Voltage | 115 V |
| Cord | 8 ft |
| Weight | 26 lb |
| Warranty | 1 year |
Alternatives in this motor size
Zoeller N264 Waste-Mate (Manual)
#12 in Up to 1/2 HPFull review
For replacing a Zoeller 264 in a system that already has its own float switch or control panel. Anyone without one should buy the automatic M264.
Amazon $364.34$364.34
Zoeller M264 Waste-Mate
#14 in Up to 1/2 HPFull review
For a basement bathroom with a short lift to the sewer line in a compact basin. Buyers lifting 15 ft or more should look at a 1/2 HP pump.
Amazon $399.95$399.95
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