The SeaFlo 33-Series is our general-duty on-demand positive displacement pump. It provides reliable performance in high water flow, and moderate pressure applications. This 3-chamber diaphragm pump provides up to 3.0 gallons per minute and is capable of self-priming up to 6 vertical feet, and can run dry without damage. Serves 3 or more 1/2” (13 mm) outlets. This automatic demand water system pump has a built-in pressure switch, which automatically starts and stops when the faucet is opened and closed. They're easy to install, service, and winterize.
Typical Applications
- Agricultural Spraying
- General Industrial
- Automotive
- Marine/RV
Features & Benefits
- Positive displacement pump
- Can run dry
- Quiet operation
- Demand pump
- Low amp draw
- Industry standard mount pattern
- Built in check valve
- Thermally protected
- Easy connect fitting
Specifications for 33-Series Diaphragm Water Pumps
| Model |
Voltage |
Open Flow GPM/LPM) |
Max Draw |
Shut-off Pressure PSI/BAR) |
| SFDP1-030-045-33 |
12V |
3.0 / 11.3 |
6.74A |
45 / 3.1 |
| SFDP2-030-045-33 |
24V |
3.0 / 11.3 |
3.40A |
45 / 3.1 |
| SFDPA1-030-045-33 |
115V |
3.3 / 12.5 |
1.60A |
45 / 3.1 |
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Priming Capabilities: 6 feet (1.8 m) suction lift
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Max Recommended Temperature: 140° F (60° C)Max.
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Material: EPDM(Valves) / Santoprene(Diaphragm)
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Ports: 1/2"-14 MNPT