Seaflo 55 Series 5.5 GPM 60 psi
#2 in 4 GPM and upFull review
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.
Amazon $110.86$110.86
5.5 GPM60 psi17 A
4.2/5
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.
- 5 GPMFlow
- 70 psiShut-off
- 10 AMax draw
- Variable speedControl
Check price at Amazon$159.99
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Variable speed holds steady pressure without pulsing or cycling
- 70 psi shut-off, the highest here
- 5 GPM from a 10 A maximum draw, with a 4-year warranty
Cons
- Costs more than switch-type pumps of the same flow
How it scores
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.
Specifications
| Model number | SFDP1-050-070-56A |
|---|---|
| Performance | |
| Rated open flow | 5 GPM |
| Shut-off pressure | 70 psi |
| Max current draw | 10 A |
| Price per GPM | $32 |
| Self-priming lift | 6 ft |
| Features | |
| Control | Variable speed |
| Diaphragm chambers | 5 |
| Internal bypass | Yes |
| Runs dry | Yes |
| Build | |
| Warranty | 4 years |
Alternatives in this flow
Wassermann 4WDP5 5.0 GPM 55 psi
#3 in 4 GPM and upFull review
The cheapest high-flow pump here by a wide margin. Buy it as a budget upgrade if you can live without a published warranty.
Amazon $63.16$63.16
5 GPM55 psi
Jabsco Par-Max HD6
#4 in 4 GPM and upFull review
The highest-flow pump here, 6 GPM at 60 psi, for big boats and multi-bath motorhomes that can feed its 18 A draw.
Amazon $266.47$266.47
6 GPM60 psi18 A
Compare
Compare the Seaflo 56A Variable Speed 5.0 GPM with any other RV water pump →
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