Rule LoPro Series Bilge Pumps
- 15 gpm flow rate
- 12 volt supply
- 2.4 inches high, built for tight spaces
- 360 degree rotating discharge
- Two modes: water sensing and electronic automatic
- 1.2 pounds listed weight
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A low-profile automatic bilge pump that mounts horizontally or vertically and offers two automatic modes. The listing does not itemize what ships in the box.
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ASIN: B00FM26P3MModel: LP900SCategory: Bilge Pumps
Styles Available
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Overview
Not a tall cartridge pump, this LoPro model stands very low so it fits under floors and in tight bilges. The discharge rotates all the way around, mounting can be horizontal or vertical, and the body is beige plastic.
Its low height and two automatic modes are the reasons to choose it for confined bilges. The included components field holds only a placeholder phrase, so mounting hardware and hose fittings need to be confirmed.
Who it's for
Owners of small boats with tight bilge space will use the compact height and the rotating discharge. Larger boats with heavier flooding, or buyers who need a clear list of included parts, should check other pumps.
Pros and cons
- Very low profile
- Horizontal or vertical mounting
- High or low water sensing
- Electronic automatic mode
- Contents not itemized
- Hose size not listed
- Amp draw not listed
Performance notes
In water sensing mode the pump starts at a set water level, and turning the motor cartridge over sets a lower trigger. The electronic mode wakes the pump on a timer to check for water and runs until the bilge is clear. Flow drops with lift and hose length.
Specifications
| Brand | Rule |
|---|---|
| Model | LP900S |
| Dimensions & fit | |
| Item Dimensions L x W x H | 12 x 9 x 4 inches |
| Weight | 1.2 pounds |
| Capacity & performance | |
| Flow Rate | 15 gpm |
| Power & efficiency | |
| Power Source | Corded electric |
| Voltage | 12 volts |
| Construction & materials | |
| Material Type | Plastic |
| Color | Beige |
| Other details | |
| Product Style | Automatic |
| Item Highlight | For tight spaces, rotating discharge |
Closest rivals on specs
SEAFLO 06 Series Automatic Submersible Bilge Pump- Flow Rate 15 vs 12.5 gpm (+20%)
Attwood WaterBuster Portable Submersible Pump- Flow Rate 15 vs 3.33 gpm (+350%)
Frequently asked questions
What is in the box with the Rule LoPro LP900S?
The included components field is not itemized. Hose fittings, mounting screws and wiring are not named.
How does the Rule LP900S sense water?
In water sensing mode it starts when water reaches the sensor height, which drops lower when the motor cartridge is turned upside down. In electronic mode it checks on a timer.
Can I mount the Rule LoPro pump sideways?
Yes. The title lists horizontal or vertical mounting.