Whale WaterMaster 12L 45-PSI 12V Pressure Pump

The Whale WaterMaster 12L 45-PSI 12V Pressure Pump gives automatic pressurized freshwater delivery for onboard faucets, showers, and other compatible fixtures. Its self-priming pump responds to fixture demand and is built to maintain a smooth, useful flow through the boat's freshwater plumbing.

WaterMaster models use an internal pressure switch and protected motor housing for straightforward automatic operation. The accumulator-equipped kit combines the pump and pressure-storage function to reduce cycling, vibration, and abrupt flow changes while simplifying installation with a preassembled arrangement.

Confirm voltage, circuit protection, tank outlet, inlet strainer, hose size, pressure compatibility, fixture demand, mounting position, and service access before installation. Sanitize potable-water plumbing as required, protect the pump from freezing, and test every connection for leaks under normal operating pressure. See the rest of our bilge and water pumps.

• The pump responds as faucets and showers open or close.
• Pressure control supports consistent flow across normal fixture demand.
• Self-priming operation gives flexibility in pump placement.
• Automatic switching removes the need to control the pump at each fixture.