Johnson Pump Twin Port 750 GPH Livewell Aerating Pump - 12V

The Johnson Pump Twin Port 750 GPH Livewell Aerating Pump (Model 48703) is a dual-outlet marine water circulation system engineered for vessels requiring simultaneous livewell and wash-down functionality. This 12V pump consolidates what traditionally requires two separate intake sources into a single 3/4" tapered inlet connection, delivering 750 gallons per hour of continuous water flow. The design eliminates redundant through-hull penetrations, reducing installation complexity and the structural compromises associated with multiple sea-cock installations.

Performance specifications reflect marine-duty engineering. The upper outlet port supplies pressurized water directly to the livewell via a 3/4" discharge line, maintaining aeration and water circulation critical for live baitfish and catch preservation during extended offshore operations. The lower outlet port connects independently to wash-down systems through either 1/2" or 3/4" port configurations, allowing crew to select discharge sizing without restricting primary livewell flow. The high-pressure inlet seal is specifically rated to handle dynamic pressures generated at cruising speeds, preventing leakage at the through-hull connection where hull integrity depends on absolute seal reliability.

This pump addresses the operational pain point common to serious fishing vessels: the need to maintain live baitwell conditions while deck operations require reliable wash-down pressure. Commercial and recreational operators working extended hours in warm water conditions depend on consistent aeration to prevent fish loss. The twin-port architecture preserves water pressure to both systems without the flow compromise that occurs when a single-outlet pump must branch downstream. Installation against a single sea-cock simplifies plumbing diagnostics and reduces failure points in the raw-water intake circuit.