
Seaflo 21-Series
Score: 72/100
Amarine Made DP-160S
Score: 72/100Rankings

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.

The Amarine Made AC 110V Self Priming Water Pressure Pump is a compact diaphragm pump designed for high-pressure fresh water washdown in RVs and boats. It features a built-in pressure switch and thermal protection, making it safe and easy to use. However, the lack of detailed material specifications and connection sizes limits its appeal for complex installations.
| Attribute | ![]() | ![]() |
|---|---|---|
1.2 GPM | 1.8 GPMbest | |
35 PSI | 160 PSIbest | |
4 ftbest | — | |
12 V | 110 Vbest | |
0.4 HPbest | — | |
4 Abest | 1.5 A | |
140 °Fbest | — | |
| ↓ lower better | 1.25 lbsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance & Power(6) | ||
Flow Rate (GPM) | 1.2 GPM | 1.8 GPM |
Max Pressure (PSI) | 35 PSI | 160 PSI |
Voltage (V) | 12 V | 110 V |
Horsepower (HP) | 0.4 HP | null HP |
Max Amperage (A) | 4.0 A | 1.5 A |
Duty Cycle (%) | Intermittent % | unknown % |
Features & Protection(1) | ||
Warranty Length (months) | N/A months | null months |
Build & Durability(5) | ||
Motor Type | Permanent Magnet | Diaphragm |
Weight (lbs) | 1.25 lbs | null lbs |
Noise Level (dB) | Low dB | null dB |
Diaphragm Material | Santoprene | null |
Valve Material | EPDM | null |
Installation & Compatibility(4) | ||
Self-Priming Lift (ft) | 4 ft | unknown ft |
Max Liquid Temperature (°F) | 140 °F | null °F |
Port Size (in) | 0.375 in | null in |
Frequency (Hz) | DC Hz | 60 Hz |


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.

No professional reviewer or editor commentary is available for this product in the current research data.
No consumer reviews, praise, or complaints are present in the results, preventing identification of common patterns or user sentiment.
