Jabsco V50AJ-115N-3A, Sensor-Max II Variable Speed Freshwater Pump, 5 GPM Quiet Marine Water Pressure Pump, No Accumulator Needed, Smooth Flow, Power-Efficient, Cast Aluminum Housing

The Sensor-Max II Variable Speed Freshwater Pump is the most advanced onboard water delivery solution in its class, designed to provide a quiet, residential-style water experience while underway or at anchor. Featuring intelligent variable speed technology, this marine freshwater pump automatically adjusts motor speed to deliver the exact flow and pressure your water system requires—no surging, no cycling, and no water hammer. At the core of the Sensor-Max II is a high-performance five-chamber diaphragm design, paired with an advanced pressure sensor and variable speed programming. This combination delivers a smooth, steady flow that maintains consistent pressure across your onboard water system—so reliable and quiet, you may forget you’re at sea. Unlike traditional marine water pumps, the Sensor-Max II eliminates the need for an accumulator tank, reducing system complexity while saving space in crowded plumbing compartments. With a high flow capacity of 5 GPM (19 LPM), it supports freshwater systems with up to five outlets, making it ideal for boats with multiple sinks, showers, and fixtures. When demand is low—such as single-faucet use—the pump automatically slows the motor, resulting in exceptionally quiet operation and reduced power consumption. Under higher demand, it seamlessly ramps up to maintain strong, consistent water pressure. Built for long-term marine use, the Sensor-Max II features co-molded diaphragm technology and a cast aluminum lower housing, ensuring durability, reliability, and performance even at higher operating pressures. Upgrade your onboard freshwater system with the Sensor-Max II and enjoy quiet operation, consistent pressure, efficient power use, and professional-grade marine reliability every time you turn on the tap.

• QUIET, SMOOTH WATER DELIVERY - Variable speed technology eliminates water hammer and pressure cycling, delivering whisper-quiet operation with smooth, consistent freshwater flow at every faucet.
• NO ACCUMULATOR TANK REQUIRED - Advanced pressure sensing automatically adjusts motor speed, removing the need for an accumulator tank while saving installation time and valuable onboard space.
• HIGH FLOW PERFORMANCE, UP TO 5 OUTLETS - With a 5 GPM (19 LPM) flow rate, the Sensor-Max II easily supplies water to systems with up to five outlets, ideal for boats with multiple faucets and showers.
• POWER-EFFICIENT VARIABLE SPEED MOTOR - Smart motor control ramps speed up or down based on demand, conserving power during low-flow use while maintaining steady pressure under higher demand.
• BUILT FOR MARINE DURABILITY - Features robust co-molded diaphragm technology and a cast aluminum lower housing engineered for long life and reliable performance at high operating pressures.