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

The WASSERMANN RV 12V water pump is a self-priming diaphragm pump that delivers up to 3.0 GPM at a stable 55 PSI for reliable on-board water pressure in campers, boats, and mobile homes.

This compact, ready-to-install pump replaces models like 4008-101-A65 and comes as a complete kit with hose adapters, an inline debris filter, and a user manual. Built around a 12V DC motor and an automatic pressure switch, it starts when a faucet opens and shuts off when flow stops. Its corrosion-resistant design and dry-run protection make it suitable for seasonal use, storage systems, and marine environments where dependable low-voltage water delivery matters.

How will this pump change my RV or boat water experience?

Expect steadier water pressure for sinks, showers, and on-board appliances without noisy buildup or backward flow. The automatic pressure switch maintains a consistent 55 PSI so fixtures perform predictably, while the 3.0 GPM flow rate balances water economy and sufficient volume for everyday tasks.

• Consistent 55 PSI for steady shower and faucet performance
• 3.0 GPM flow to support multiple fixtures in sequence
• Automatic start/stop reduces manual intervention
• Self-priming design simplifies installation and maintenance

Is installation difficult and what hardware is included?

Installation is straightforward for anyone comfortable with basic plumbing and 12V wiring. The pump ships as a complete kit with common fittings and a debris filter, so you typically need only standard tools and a 12V power connection to get running.

• Kit includes 1/2" barbed hose adapters and a 1/2" male-thread hose adapter
• Inline filter to prevent particles from entering the pump
• User manual with wiring and mounting guidance included
• Compatible with standard 12V battery systems and accessory sockets

How durable and safe is the WASSERMANN 12V pump for seasonal and marine use?

The pump is engineered for rugged environments: corrosion-resistant components, self-priming capability, and dry-run protection reduce wear and the chance of damage. These features help prolong service life whether your setup sees daily use or long periods of inactivity between trips.

• Corrosion-resistant materials suitable for freshwater and marine settings
• Self-priming for reliable startup after storage
• Dry-run safe design reduces thermal damage when water is absent
• Compact footprint for tight installation spaces

What power and plumbing requirements should I plan for?

It runs on 12V DC and can be wired directly to a vehicle battery or accessory socket; ensure your battery and wiring meet the amp draw specified in the manual. Use 1/2" ID hoses or fittings provided for leak-free connections and place the inline filter on the pump inlet to protect the diaphragm from debris.

• 12V DC supply — suitable for typical RV/boat battery systems
• Included 1/2" fittings match common RV plumbing sizes
• Mount near water tank with secure electrical connections
• Follow manual for fuse sizing and recommended wire gauge

Who is this for: The WASSERMANN RV 12V water pump is aimed at RV owners, boaters, van-life travelers, and anyone needing a compact replacement pump for mobile or off-grid water systems. It suits DIY installers and service technicians who want an all-in-one kit with automatic pressure control, dependable flow, and corrosion-resistant construction for seasonal or year-round use.