Johnson Pump Aqua Jet Duo WPS 10.4 GPM – 24V Water Pressure Pump System – 10-13409-02

The Johnson Pump Aqua Jet Duo WPS 10.4 GPM Water Pressure Pump System is a high-performance, dual-pump freshwater pressure solution engineered for boats and marine applications that demand consistent water flow, redundancy, and quiet operation. Designed for 24-volt electrical systems, this complete water pressure system delivers up to 10.4 gallons per minute, ensuring reliable water supply to multiple outlets simultaneously.

Featuring two variable-speed diaphragm pumps working in tandem, the Aqua Jet Duo WPS automatically adjusts output based on water demand. This smart design provides smooth, pulse-free water flow while reducing pump cycling, noise, and energy consumption. If one pump fails, the system automatically switches to single-pump operation, providing built-in redundancy for critical onboard water systems.

The integrated electronic pressure control unit eliminates the need for an accumulator tank, simplifying installation while maintaining steady pressure throughout the system. Ideal for yachts, commercial vessels, liveaboards, and multi-head installations, the Aqua Jet Duo WPS is built for durability, efficiency, and long service life in demanding marine environments.

Key Features

• Massive Flow Rate: Delivers 10.4 GPM, ensuring that multiple showers, galleys, and washdown stations can run at the same time without losing pressure.

• Smooth & Quiet: The five-chamber diaphragm design provides a much smoother flow than standard pumps, virtually eliminating pulsation and the need for an accumulator tank in many installations.

• Built-in Redundancy: Featuring two independent pumps, this system offers a "fail-safe" solution for long-range cruisers or commercial operators who cannot afford a total water system failure.

• Integrated Pressure Switch: Automatically maintains system pressure between 30 PSI (cut-in) and 45 PSI (cut-out) for effortless "on-demand" operation.

• Heavy-Duty Construction: Mounted on a robust, corrosion-resistant base with an integrated PUMProtector inlet strainer to keep debris out of the dual pump heads.

In the Box

This system is an "all-in-one" unit that arrives mounted on a single base for easier installation.

• Two Parallel-Connected Aqua Jet WPS Pumps: Two high-efficiency, five-chamber diaphragm pumps that work together to provide high flow.

• 2-Liter Accumulator Tank: A pre-pressurized tank that reduces pump cycling and ensures a smooth, pulsation-free water flow.

• PUMProtector Inlet Strainers: Two integrated strainers that protect the pump internals from debris and scale.

• Stainless Steel Base: A durable, corrosion-resistant mounting platform that allows for horizontal or vertical installation.

• Ports: Standard 3/4" hose connections are included for straightforward plumbing.

Performance & Operation

• High Flow Capacity: Delivers a powerful 10.4 GPM (40 L/min), making it suitable for multiple showers and galleys running simultaneously.

• Intelligent Demand: For low-water usage, only one pump activates. If demand increases (e.g., a second shower is turned on), the second pump automatically cuts in to maintain pressure.

• Quiet Technology: The five-chamber design is engineered to be whisper-quiet, significantly reducing the "thumping" sound common in older marine water pumps.

• 24V Power: Specifically designed for 24-volt electrical systems, requiring a 15 Amp fuse.

Key Technical Specs

Ideal Applications

• Yachts and large powerboats

• Commercial and charter vessels

• Multi-head freshwater systems

• Liveaboard boats and luxury cruisers

• Marine water systems requiring redundancy and high flow

Why Choose the Johnson Pump Aqua Jet Duo WPS?

The Aqua Jet Duo WPS 10.4 GPM stands out as a premium marine water pressure system that combines power, reliability, and intelligent design. Its dual-pump configuration ensures uninterrupted water supply, while advanced pressure control delivers residential-style comfort on the water. For boat owners who demand high flow, quiet operation, and fail-safe performance, this system is a proven, professional-grade solution.

Maintenance Tip

To ensure the longest life for your system, the PUMProtector inlet strainers should be checked and cleaned regularly to prevent debris from reaching the pump valves. Additionally, the air pre-charge in the accumulator tank (0.8 Bar factory set) should be checked annually using a standard tire gauge.