wassermann RV water pump 115V AC – 4.0 GPM 45 PSI self-priming diaphragm with pressure switch

The WASSERMANN 115V RV Water Pump is a self-priming diaphragm pressure pump that delivers up to 4.0 GPM at 45 PSI for steady, automatic water flow in RVs, boats, campers, and home booster applications.

This compact, ready-to-install pump includes all the fittings and a debris filter you need to replace or upgrade your freshwater system. Designed for 115V household outlets, the unit uses an integrated pressure switch so it starts when a tap opens and stops when you close it, giving dependable hands-off operation for sinks, showers, or outdoor water tasks.

How does this pump improve water flow for my RV or boat?

The WASSERMANN pump raises household-style pressure to consistent levels suitable for bathing, washing dishes, and running small appliances. Its 4.0 GPM capacity and 45 PSI pressure setting provide noticeably stronger, more even flow than many stock RV pumps.

• 4.0 gallons per minute flow rate for sustained use.
• Factory-set 45 PSI pressure for steady output.
• Self-priming diaphragm design reduces air-lock issues.
• Suitable for sinks, showers, and small onboard appliances.

Will it be easy to install and operate at home or on the road?

Yes — the pump arrives as a complete kit with barbed and threaded hose adaptors plus a debris filter and manual. It runs off a standard 115V outlet, eliminating the need for special wiring, and the built-in pressure switch handles automatic start/stop with tap use.

• Includes 1/2" barbed and 1/2" male thread adaptors for common hoses.
• Plug-and-play 115V power makes home testing simple.
• Pressure switch enables automatic, hands-free operation.
• Step-by-step manual and debris filter included for quick setup.

How durable is the pump for frequent or outdoor use?

Constructed for mobile and light commercial environments, the pump uses materials and a diaphragm design meant to tolerate repeated cycling and intermittent outdoor exposure. Routine maintenance of the included filter and secure mounting will maximize life and reliability.

• Diaphragm mechanism built for repetitive starts and stops.
• Corrosion-resistant components suitable for freshwater systems.
• Compact housing designed for easy mounting in tight spaces.
• Filter protects internal parts from debris and sediment.

Can this pump handle tasks beyond RV use, like garden or garage jobs?

Absolutely — while designed for RVs and marine settings, the WASSERMANN pump is also useful as a booster for small home projects, garden sprinklers, and car washing where 115V power is available. It’s best for low to moderate volume tasks rather than continuous heavy-duty pumping.

• Works as a house booster for light-duty water pressure needs.
• Suitable for irrigation of small garden beds and sprinklers.
• Handy for washing vehicles or tools in a garage setting.
• Not intended for continuous industrial pumping applications.

Who is this for: The WASSERMANN 115V RV Water Pump is ideal for RV and boat owners who want a stronger, more reliable freshwater supply, DIYers replacing or upgrading onboard pumps, and homeowners needing a compact 115V booster for light outdoor tasks. If you need automatic tap-activated water pressure at around 45 PSI and up to 4.0 GPM with straightforward installation and included fittings, this pump fits the bill. Regular maintenance of the filter and secure mounting will keep performance consistent on the road or at home.