Why it matters
The WP-331 adds an IP65 waterproof on/off switch to VIVOSUN's transfer pump, rated at up to 330 GPH and 40 ft.
It comes with a 10 ft suction hose, filter, impeller, carbon brushes and gasket. Fill the chamber with water before use.
Who it's for, and who should skip it
Good fit if
- Lawn and garden watering
- Aquariums and ponds
- Basement water
Look elsewhere if
- Submerging in water (the motor must stay dry)
- Dirty water with grit
- Long continuous runs
Pros and cons
Pros
- IP65 switch
- 10 ft hose
- Spares included
Cons
- Must be primed
- Low flow
- Brushed motor wears
Limitations to weigh
- Transfer pumps sit outside the water: fill the pump head before each start and never run it dry.
- Small brushed transfer motors wear their carbon brushes and impeller; keep the spares that come in the box.
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 | Metal | Retailer |
|---|---|---|
| Product weight | 2.79 kg | Retailer |
| Max flow (maker) | 5.5 GPM | Retailer |
| Max head / lift (maker) | 40 ft | Retailer |
| Voltage | 115 V | Retailer |
| Horsepower | 1/10 HP | Retailer |
| Model number | WP-331 | Retailer |
Alternatives worth comparing
More utility & transfer pumps we cover
Final verdict
The easier VIVOSUN to live with.
Where to buy
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Questions buyers ask
Does it have a switch?
Yes, IP65 waterproof.
How long is the suction hose?
10 ft.