WASSERMANN 12V RV Fresh Water Pump – 4.0 GPM 45 PSI Self-Priming Diaphragm Pump

Condition: New Open Box

The factory seal on the box was opened only to verify contents, inspect condition, and photograph the unit. Pump has never been installed, wired, or used with water. All original fittings and documentation are included.

You will receive the exact pump shown in the photos.

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What This Pump Is Used For

This is a standard-size 12V diaphragm pressure pump commonly used as a direct replacement for many RV and marine freshwater systems including units similar to the Shurflo 2088 series footprint.

Perfect for:

• RVs & campers

• Travel trailers

• Boats & marine freshwater systems

• Food trucks & concession trailers

• Horse trailers

• Off-grid cabins

• Overlanding builds

• Mobile detailing rigs

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Key Features

• Self-priming diaphragm design

• Built-in automatic pressure switch

• 45 PSI shut-off pressure

• 4.0 GPM high flow rate

• Runs dry without damage (brief dry priming)

• Thermal overload protection with auto restart

• Quiet operation

• Continuous duty capable

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Technical Specifications

Model: 3WDP4-45-12V

Voltage: 12 Volt DC

Open Flow: 4.0 GPM / 15.0 LPM

Operating Pressure: 45 PSI (3.1 BAR)

Amperage: 4.6A (8.0A Max)

Pump Type: Automatic Demand Diaphragm

Priming: Self-Priming

Power Connection: Hardwire leads

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Included

• Water pump assembly

• Mounting base

• Hose fittings & strainer parts

• Clamps & adapters

• Instruction manual

• Original box

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Installation Notes (Important)

Pump has been visually inspected but not fluid-tested. Proper wiring polarity and installation are required. Incorrect wiring, improper plumbing setup, or dry-run damage caused by installation error is not a defect.

This is a standard 12V DC system pump and requires appropriate fuse protection and a suitable water source.

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Shipping & Handling

Pump will be securely packaged with protective padding to prevent shipping damage. All identifying marks and serial labels are documented prior to shipment.

Returns are accepted only in the same condition received with all original components included.

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Ready to install and perfect as a replacement or spare for travel emergencies.