wassermann 12V RV Water Pump 3.0 GPM 55 PSI — Self-Priming Diaphragm Pump with Pressure Switch and Filter Kit

WASSERMANN's 12V RV water pump is a self-priming diaphragm pump that delivers up to 3.0 GPM at 55 PSI with an automatic pressure switch for hands-free water control in RVs, boats, and campers.

If you need dependable on-board water pressure without complicated plumbing, this WASSERMANN 12-volt pump is built for mobile life. It replaces common 4008-101-A65 style pumps and ships as a complete kit with fittings and a debris filter. The compact diaphragm motor and corrosion-resistant housing make it suitable for kitchens, bathrooms, showers, and small marine systems where consistent flow and automatic shutoff matter.

How does this pump maintain steady water pressure inside an RV?

The pump uses an internal pressure switch to monitor line pressure and start or stop the motor automatically when a tap is opened or closed. That keeps flow stable at a rated 55 PSI, preventing surges and reducing cycling for extended component life.

• Automatic pressure switch starts and stops pump as needed
• Rated flow up to 3.0 gallons per minute (GPM)
• Consistent 55 PSI operating pressure for showers and faucets
• Self-priming diaphragm design minimizes cavitation and air lock

What power and connection options does the pump offer for mobile setups?

This unit runs on 12V DC, so it connects directly to standard RV batteries or to a vehicle cigarette-lighter socket with an appropriate adapter. The kit includes common 1/2" barbed and threaded fittings to match typical RV plumbing without needing custom adapters.

• 12V DC motor compatible with RV battery systems
• Includes two 1/2" barbed hose adapters and one 1/2" male-thread adapter
• Compact footprint for simple under-sink or compartment mounting
• Filter out debris included to protect the pump inlet and extend life

How durable and maintenance-friendly is the WASSERMANN pump?

Designed for rugged mobile environments, the pump features corrosion-resistant materials and a dry-run safe capability that helps prevent damage if water supply is interrupted. Routine upkeep is straightforward: clean the included debris filter and check hose fittings periodically to keep the diaphragm and valves operating smoothly.

• Corrosion-resistant construction suitable for marine and RV use
• Self-priming design reduces need for manual priming after installation
• Dry-run protection helps avoid motor damage during low-water conditions
• Comes with a user manual for easy installation and troubleshooting

What comes in the complete kit and how easy is installation?

The WASSERMANN kit includes the 12V pump, two 1/2" barbed hose adaptors, one 1/2" male-thread hose adaptor, a debris filter, and a user manual. Most installations are straightforward for standard RV or marine plumbing, requiring basic hand tools and a secure 12V electrical connection.

• One 12V diaphragm water pump (3.0 GPM, 55 PSI)
• Two 1/2" barbed hose adapters and one 1/2" male-thread adapter
• Inline debris filter to protect pump internals
• User manual with wiring and mounting guidance

Who is this for: The WASSERMANN 12V pump is aimed at RV owners, boaters, and van-lifers who need a reliable replacement or upgrade pump that delivers stable pressure for sinks, showers, and galley systems. It also suits DIYers fitting small off-grid water systems or gardeners building portable watering setups where 12V power is available. If you want an easy-to-install, automatic, and durable pump built for mobile use, this unit covers those needs without complex plumbing or high-voltage wiring.