A lot of flow and pressure for the money, for big rigs and boats with several fixtures. Check that the wiring can carry its 17 A draw.
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its flow. How we rank explains each one.
| Model number | SFDP1-055-060-55 |
|---|---|
| Performance | |
| Rated open flow | 5.5 GPM |
| Shut-off pressure | 60 psi |
| Max current draw | 17 A |
| Price per GPM | $20.16 |
| Self-priming lift | 9 ft |
| Features | |
| Control | Pressure switch |
| Diaphragm chambers | 5 |
| Internal bypass | Yes |
| Runs dry | Yes |
| Strainer included | Yes |
| Build | |
| Warranty | 4 years |
The best overall pick: a variable-speed 5 GPM pump that keeps the shower steady while other taps open, at well under the price of other variable-speed pumps.
Amazon $159.99The cheapest high-flow pump here by a wide margin. Buy it as a budget upgrade if you can live without a published warranty.
Amazon $63.16The highest-flow pump here, 6 GPM at 60 psi, for big boats and multi-bath motorhomes that can feed its 18 A draw.
Amazon $266.47Compare the Seaflo 55 Series 5.5 GPM 60 psi with any other RV water pump →
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