SEAFLO 12V 4.0GPM 60PSI Water Pressure Pump 51 Series Marine RV
Delivery Time: All of our mounts are made to order. Please allow 7–10 working days for delivery.
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Five-chamber high-flow on-demand pump
A 12V heavy-duty diaphragm pump for marine, RV and remote-cabin water systems. Its five-chamber design provides smoother high-volume flow, up to 4.0GPM open flow and a 60PSI pressure-switch cut-off, often without requiring an accumulator tank.
Technical specifications
| Manufacturer model | SFDP1-040-060-51 NEW |
| Supply voltage | 12V DC |
| Open flow | 4.0GPM / 15.1LPM |
| Shut-off pressure | 60PSI / 4.2bar |
| Maximum current draw | 14A |
| Self-priming height | Up to 1.8m / 6ft |
| Pump type | Five-chamber on-demand diaphragm pump |
| Ports | 1/2in-14 MNPT |
| Materials | Santoprene diaphragm and EPDM valves |
| Duty/features | Quiet operation; dry-run capable for normal workloads |
| Fluid temperature | Up to 60°C / 140°F |
| Wiring | 16AWG leads, approximately 22.8cm |
| Approximate size | 28.2 x 15.7 x 13.6cm |
| Unit weight | Approximately 2.76kg |
| Fluid compatibility | Fresh water and salt water |
| Manufacturer warranty | 2 years |
Applications and compatibility
- For multi-outlet water systems on 12V yachts, motorboats, caravans, RVs and remote cabins.
- Manufacturer guidance states up to four fixtures, subject to simultaneous demand and pipe losses.
- Every heater, filter, accumulator, tap and hose must be rated for a 60PSI system.
- Not suitable for fuel, solvents or other flammable liquids.
Installation and package contents
- Mount dry and ventilated on a stable surface, keep suction plumbing short and install an inlet strainer.
- Use reinforced hose and verify the 1/2in-14 MNPT adapter arrangement against the installation.
- Protect the circuit with cable and fuse sized for the 14A maximum draw and run length.
- Package contains one SEAFLO 51 Series pump. Confirm strainer, port adapters and fasteners supplied before ordering.
Frequently asked questions
Does it require an accumulator tank?
The five-chamber design can operate without one, although an accumulator may still further smooth flow in some systems.
Can it supply four fixtures?
SEAFLO states up to four fixtures, but simultaneous performance depends on demand and plumbing.
Can it pump seawater?
Yes. The manufacturer lists fresh- and salt-water compatibility.
Can it run on 24V?
No. This version is for 12V DC.