Longrun 12V DC Fresh Water Diaphragm Pump 6L/min (1.56 GPM) — Adjustable Pressure Switch & 100 PSI Cut-Off

LONGRUN's 12V DC diaphragm fresh water pump is a compact, self-priming unit that delivers up to 6 L/min (1.56 GPM) with an adjustable pressure switch and built-in safety cut-off at 100 PSI.

This pump is designed for portable water systems — RVs, campers, boats and garden sprayers — offering quiet operation, reliable priming and simple electrical connections. Its brushed copper-coil motor and soft-rubber mounting reduce vibration and extend usable life, while the included adjustable pressure switch automates on/off cycling so faucets and sprayers behave predictably. A pair of hose clamps and a quick-plug electrical connector make installation straightforward for DIYers and installers alike.

How does this pump save time during setup and daily use?

The LONGRUN pump arrives ready for quick installation with a prewired quick plug and two hose clamps for secure tubing connections. The self-priming feature avoids manual priming in most installations, and the adjustable pressure switch controls cycling to match demand.

• Self-priming up to typical system suction distances — less manual effort
• Quick plug electrical connector for fast wiring and safer hookups
• Adjustable pressure switch lets you set on/off thresholds for your system
• Includes two hose clamps to secure 1/2" or similar tubing

Will this pump run quietly and withstand vibration in a vehicle or boat?

Yes — the pump base uses soft rubber supports sized to lower vibration transmission and reduce noise in mobile environments. The motor also uses a brushed copper coil that balances performance and durability for steady operation in RVs and marine craft.

• Soft-rubber mounting reduces vibration and audible noise
• Durable brushed copper-coil motor for longer service life
• Compact footprint fits cramped compartments in boats and campers

What safety features protect the pump and water system?

The pump includes electronic protections that monitor pressure and voltage; if pressure exceeds the rated threshold the switch interrupts power and restarts automatically when conditions normalize. Factory testing helps ensure the diaphragm and internal parts left with residual water are in good condition.

• Electronic pressure cut-off prevents operation above ~100 PSI
• Overvoltage protection and automatic restart when conditions return to normal
• Factory-tested prior to shipping; small residual water inside unit is normal

How much flow and pressure can I expect for showers, taps or sprinklers?

The LONGRUN diaphragm pump produces about 6 liters per minute (approximately 1.56 gallons per minute), suitable for low- to moderate-demand fixtures like onboard sinks, portable showers and small irrigation heads. Use the adjustable switch to tailor start/stop pressure to your fixtures for steady performance.

• Flow: ~6 L/min (1.56 GPM) for typical RV and marine fixtures
• Adjustable pressure switch lets you match output to appliances
• Best for single fixtures or small multi-outlet systems, not large household mains

Who this pump is for: Owners of campers, caravans, small boats, garden sprayer setups and tiny-home water systems who need a dependable 12V fresh water pump that is easy to mount, quiet in operation and protected against overpressure. Installers and DIYers will appreciate the included clamps and quick plug, while users wanting low-to-moderate flow for sinks, showers or irrigation will find a balanced combination of performance and safety.