Shurflo Revolution 4028 2.3 GPM
#9 in Under 4 GPMFull review
A low-draw 2.3 GPM pump for a small camper or van with one fixture in use at a time. Larger rigs get more water per dollar from a 3 GPM pump.
Amazon $120.10$120.10
The Shurflo Revolution 4028 2.3 GPM is the better RV water pump overall, rated 2.5 to 2.0. The Shurflo Revolution 4028 2.3 GPM leads on pressure and features. The Shurflo Aqua King II Junior 2.0 wins on efficiency. The Shurflo Aqua King II Junior 2.0 costs $5.30 less ($114.80 vs $120.10).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Shurflo Aqua King II Junior 2.0
#11 in Under 4 GPMFull review
A small, low-draw pump for a single galley tap on a boat or van. Its 2 GPM at 30 psi is too little for an RV with a shower.
Amazon $114.80$114.80
Which should you buy?
- Choose the Shurflo Revolution 4028 2.3 GPM for pressure (50 psi shut-off vs 30 psi shut-off) and features (internal bypass, runs dry without damage, thermal protection vs runs dry without damage).
- Choose the Shurflo Aqua King II Junior 2.0 for efficiency (0.57 GPM per amp (3.5 A max) vs 0.46 GPM per amp (5 A max)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 4 GPM RV water pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | Shurflo Revolution 4028 2.3 GPM | Shurflo Aqua King II Junior 2.0 |
|---|---|---|
| Overall rating | 2.5/5 | 2.0/5 |
| Value 25% | 19 $52.22 per GPM ($120.10, 2.3 GPM) | 13 $57.40 per GPM ($114.80, 2 GPM) |
| Flow 20% | 7 2.3 GPM rated open flow | 0 2 GPM rated open flow |
| Pressure 15% | 57 50 psi shut-off | 0 30 psi shut-off |
| Efficiency 10% | 60 0.46 GPM per amp (5 A max) | 92 0.57 GPM per amp (3.5 A max) |
| Features 15% | 55 internal bypass, runs dry without damage, thermal protection | 20 runs dry without damage |
| Warranty 15% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Shurflo Revolution 4028 2.3 GPM | Shurflo Aqua King II Junior 2.0 | |
|---|---|---|
| Performance | ||
| Rated open flow | 2.3 GPM | 2 GPM |
| Shut-off pressure | 50 psi | 30 psi |
| Max current draw | 5 A | 3.5 A |
| Price per GPM | $52.22 | $57.40 |
| Self-priming lift | 6 ft | - |
| Features | ||
| Control | Pressure switch | Pressure switch |
| Diaphragm chambers | 4 | - |
| Internal bypass | Yes | No |
| Runs dry | Yes | Yes |
| Thermal protection | Yes | - |