Why it matters
The SumpJet runs on water pressure instead of electricity: city water flowing through it creates suction that pulls water out of the pit. It's fully automatic and needs no battery, so it keeps working through long outages.
Liberty specifies an inlet supply pressure of 20 to 100 psi. Its flow depends on your water pressure and lift, and the water it uses goes down the drain along with the pit water.
Who it's for, and who should skip it
Good fit if
- Long power outages
- Homes on city water
- Owners who don't want batteries
Look elsewhere if
- Homes on wells
- Low water pressure
- Areas with water restrictions
Pros and cons
Pros
- No battery
- Fully automatic
- Fully assembled
Cons
- Uses city water
- Flow depends on pressure
- Needs a plumbed supply
Limitations to weigh
- Water-powered backups use city water pressure and send that water down the drain with the pit water; they don't suit homes on wells.
- Install a backflow preventer where your local code requires one.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Dimensions (seller) | 14.5"L x 5.1"W x 21.6"H | Retailer |
|---|---|---|
| Product weight | 5 lb | Retailer |
| Max flow (maker) | 19.8 GPM | Retailer |
| Model number | SJ10 | Retailer |
| Warranty | 2 years from purchase | Retailer |
Alternatives worth comparing
More backup sump pumps we cover
- Superior Pump 91012 12 Volt Utility Pump
- Basement Watchdog BWE Emergency Battery Backup
- Basement Watchdog Special CONNECT Battery Backup
- Wayne ESP25 Battery Backup System
All backup sump pumps, compared in one table · Every Liberty Pumps product we cover
Final verdict
The low-maintenance backup for homes with strong city water.
Where to buy
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