
SEAFLO 51 Series
Score: 88/100
Camplux DC 12V Water Pump
Score: 80/100Rankings

The SeaFlo 51 Series is a heavy-duty, 5-chamber positive displacement diaphragm pump designed for automatic demand water systems in RVs, boats, and off-grid setups. It delivers high flow rates up to 5.5 GPM at 60 PSI with self-priming capabilities and run-dry safety, making it suitable for supplying multiple fixtures simultaneously. While it offers excellent performance and durability, the high amp draw requires careful electrical planning.

The Camplux JK-3206 is a 12V DC self-priming diaphragm pump designed for low-volume, intermittent water transfer in mobile settings. It delivers 1.6 GPM flow at 65 PSI with an adjustable pressure switch and run-dry safety. It is best suited for RVers and campers needing portable, quiet water transfer for sinks and showers.
| Attribute | ![]() | ![]() |
|---|---|---|
5.5 GPMbest | 1.6 GPM | |
60 PSI | 65 PSIbest | |
6 ftbest | 4 ft | |
24 Vbest | 12 V | |
0.12 HPbest | — | |
9 Abest | 6 A | |
100 %best | — | |
140 °Fbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance & Power(6) | ||
Flow Rate (GPM) | 5.5 GPM | 1.6 GPM |
Max Pressure (PSI) | 60 PSI | 65 PSI |
Voltage (V) | 24 V | 12 V |
Horsepower (HP) | 0.12 HP | null HP |
Max Amperage (A) | 9.0 A | 6.0 A |
Duty Cycle (%) | 100 % | Intermittent % |
Features & Protection(2) | ||
IP Rating | N/A | null |
Warranty Length (months) | 48 months | 12 months |
Build & Durability(4) | ||
Weight (lbs) | 5.5 lbs | 2.8 lbs |
Noise Level (dB) | 65 dB | low dB |
Diaphragm Material | Santoprene | null |
Valve Material | EPDM | null |
Installation & Compatibility(2) | ||
Self-Priming Lift (ft) | 6 ft | 4 ft |
Max Liquid Temperature (°F) | 140 °F | null °F |

Products in the top-left offer the best value (high score, low price).

Professional reviewers and editors praise the SeaFlo 51 Series for its high-volume flow, quiet efficiency, and durability in marine and RV applications. They highlight the smart pressure switch for consistent pressure and the 4-year warranty as standout features, describing it as a high-performance, durable solution for boats and RVs.
Everyday users commonly praise the strong pressure and flow performance, noting its suitability for RVs, pressure washing, and boats. While recurring complaints are minimal, some users note the high amp draw requires robust wiring, and a few mention that setup tweaks are needed for optimal quietness.

“performs well”




Professional sources and retailers emphasize the pump's ease of use, portability, and stable water output, positioning it as an ideal solution for mobile applications like RVs, boats, and camping.
User feedback is sparse but generally positive, with common praise focusing on reliable priming, consistent pressure for camping sinks and showers, and quiet operation.