
Seaflo 21-Series
Score: 72/100
Camplux DC 12V Water Pump
Score: 80/100Rankings

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.

The Seaflo 21 Series is a compact 12V DC diaphragm pump designed for on-demand water pressure in mobile applications like RVs and boats, delivering 1.2 GPM at 35 PSI. It features self-priming capabilities and a built-in pressure switch for automatic operation. It is best suited for RV and caravan owners needing portable water pressure for 1-2 fixtures where battery efficiency is critical.
| Attribute | ![]() | ![]() |
|---|---|---|
1.2 GPM | 1.6 GPMbest | |
35 PSI | 65 PSIbest | |
4 ftbest | 4 ftbest | |
12 Vbest | 12 Vbest | |
0.4 HPbest | — | |
4 A | 6 Abest | |
140 °Fbest | — | |
| ↓ lower better | 1.25 lbsbest | 2.8 lbs |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance & Power(4) | ||
Flow Rate (GPM) | 1.2 GPM | 1.6 GPM |
Max Pressure (PSI) | 35 PSI | 65 PSI |
Horsepower (HP) | 0.4 HP | null HP |
Max Amperage (A) | 4.0 A | 6.0 A |
Features & Protection(1) | ||
Warranty Length (months) | N/A months | 12 months |
Build & Durability(5) | ||
Motor Type | Permanent Magnet | Diaphragm |
Weight (lbs) | 1.25 lbs | 2.8 lbs |
Noise Level (dB) | Low dB | low dB |
Diaphragm Material | Santoprene | null |
Valve Material | EPDM | null |
Installation & Compatibility(2) | ||
Max Liquid Temperature (°F) | 140 °F | null °F |
Port Size (in) | 0.375 in | 0.5 in |

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

Professional reviewers and editors highlight the Seaflo 21 Series as a professional-grade solution for marine and RV applications, praising its efficient low current draw and high capacity output.
Everyday users commonly praise the pump for its strong initial flow and ease of setup. However, recurring complaints include priming issues if not level, increased noise under high demand, and reduced lifespan when used with dirty water.




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.