Why it matters
Adding a backup pump usually means cutting and gluing new PVC. This kit replaces that with a Y-connector, two threaded 1-1/2 in silent check valves, rubber couplings and stainless clamps; a screwdriver is the only tool.
Screw a check valve into each pump, drop the Y into the valve boots and couple it to the existing discharge line. It suits any pump with a standard 1-1/2 in NPT discharge.
Who it's for, and who should skip it
Good fit if
- Adding a backup pump
- DIY installs
- 1-1/2 in NPT pumps
Look elsewhere if
- Pumps with other discharge sizes
- Pits too narrow for two pumps
Pros and cons
Pros
- No cutting or gluing
- Two silent check valves
- Complete kit
Cons
- 1-1/2 in NPT only
- Rubber boots age
- Needs space for two pumps
Limitations to weigh
- Fit a check valve on the discharge so water in the pipe doesn't fall back into the pit after each cycle.
- Set the backup's switch higher than the primary's so the backup only runs when the primary can't keep up.
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 | PVC | Retailer |
|---|---|---|
| Dimensions (seller) | 3"L x 6.5"W x 17.75"H | Retailer |
| Product weight | 2 lb | Retailer |
| Model number | PSDPKIT1 | Retailer |
Alternatives worth comparing
More sump pump accessories we cover
- Water Boss 2359 Float Switch (Sump Alarm)
- Superior Pump 92010 Vertical Float Switch
- Sump Alarm Piggyback Tethered Float Switch
- PumpSpy TS-100 Tethered Float Switch
All sump pump accessories, compared in one table · Every PumpSpy product we cover
Final verdict
The easiest way to plumb a backup pump.
Where to buy
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure