12V Diaphragm Water Pump – 3.5 GPM High Flow (Self-Priming, 45 PSI)
Reliable High-Flow Water Pressure for Van & RV Systems
Power your off-grid water system with this 12V Diaphragm Water Pump, delivering up to 3.57 GPM (13.5 LPM) and a consistent 45 PSI shut-off pressure. Designed for van conversions, RVs, and mobile water systems, this pump provides reliable pressure for sinks, showers, and full interior plumbing setups.
With a self-priming design, automatic pressure switch, and quiet operation, it’s built for dependable daily use while maintaining a smooth, residential-style water experience on the road.
Key Features
- 12V DC operation – ideal for van, RV, and off-grid battery systems
- High flow rate: 3.57 GPM (13.5 LPM) for strong, consistent water output
- Self-priming up to 6 ft vertical lift for flexible installation
- Automatic pressure switch with 45 PSI shut-off
- Internal bypass system reduces rapid cycling and extends pump life
- Quiet operation with vibration-damping rubber feet
- Compact design fits easily in tight installation spaces
- Simple installation using standard tools and fittings
Consistent Performance for Real-World Use
This high-flow diaphragm pump is engineered to deliver stable water pressure across varying demand levels, making it ideal for:
- Kitchen sinks and galleys
- Indoor and outdoor showers
- Multi-fixture van water systems
Even under load, the pump maintains strong output, ensuring a reliable and comfortable water experience whether you're rinsing gear or taking a full shower.
Performance Data
| Pressure (PSI / BAR) | Flow Rate (GPM / LPM) | Current (Amps) |
|---|---|---|
| 0 / 0.00 | 3.57 / 13.50 | 4.40 |
| 10 / 0.69 | 3.04 / 11.50 | 6.20 |
| 20 / 1.38 | 2.51 / 9.50 | 7.20 |
| 30 / 2.07 | 1.98 / 7.50 | 7.80 |
| 40 / 2.76 | 1.56 / 5.90 | 8.30 |
| 45 / 3.10 | 0.00 (Shut-off) | 9.00 |
Designed for Quiet & Efficient Operation
Built with vibration-damping rubber feet and an internal bypass system, this pump minimizes noise and prevents rapid cycling. The automatic pressure switch ensures the pump only runs when water is needed, improving efficiency and extending system life.
Flexible Installation
- Self-priming up to 6 feet allows flexible mounting relative to your water tank
- Compact footprint fits easily under sinks, cabinets, or utility compartments
- Designed for straightforward installation in new builds or system upgrades
Why Choose This 12V Water Pump
- Delivers high flow and consistent pressure for full van water systems
- Reliable performance for off-grid and mobile applications
- Quiet, efficient operation suited for daily use
- Easy to install and integrate into existing systems
- Ideal for Sprinter, Transit, ProMaster, RV, and overland builds
