Johnson Pump Aqua Jet WPS 2.9 GPM – 12V – NPT – 2.8 Bar – 10-13405-103

The Johnson Pump Aqua Jet WPS 2.9 GPM Water Pressure Pump System is a compact, intelligent freshwater pressure solution designed for boats, RVs, and mobile water systems requiring quiet operation and consistent pressure. Operating on 12V DC, this system delivers up to 2.9 gallons per minute at 2.8 bar (approximately 40 PSI), making it ideal for supplying water to sinks, showers, and small onboard appliances.

Featuring variable-speed diaphragm pump technology, the Aqua Jet WPS automatically adjusts pump speed based on water demand, providing smooth, pulse-free water flow while reducing noise, vibration, and power consumption. The integrated electronic pressure control eliminates the need for an accumulator tank, simplifying installation and reducing system complexity.

Built with marine-grade materials and corrosion-resistant components, the Aqua Jet WPS is engineered for long service life in harsh environments. NPT threaded ports ensure easy integration with standard plumbing systems, making this unit a versatile choice for both new installations and system upgrades.

Ideal Applications

• Powerboats and sailboats

• RVs and campers

• Off-grid cabins and mobile water systems

• Freshwater pressure system upgrades

What's Included:

• Aqua Jet WPS 2.9 Pump: The core 12V five-chamber diaphragm pump with an integrated 41 PSI (2.8 Bar) pressure switch.

• Hose Barb Ports: Two 1/2" (13mm) hose barb connectors for standard flexible marine piping.

• Threaded Ports: Two 3/8" NPT threaded connectors for rigid plumbing setups.

• Mounting Feet: Vibration-dampening rubber feet pre-installed on the pump base to ensure quiet operation.

• User Manual: Detailed installation instructions, wiring diagrams, and maintenance tips.

Johnson Pump Aqua Jet WPS 2.9 GPM

Why Choose the Johnson Pump Aqua Jet WPS?

The Aqua Jet WPS 2.9 GPM combines intelligent pressure control, quiet performance, and simplified installation into a compact package. With smooth water delivery and reliable marine-grade construction, it’s an excellent solution for boaters and RV owners seeking residential-style water pressure without complexity.

Pro-Tip for Installation

Since this model uses NPT threaded ports, ensure you use Teflon tape or a marine-grade thread sealant on your fittings to prevent air leaks on the intake side. An air leak (even a tiny one) can prevent the pump from priming correctly or cause it to "cycle" on and off when faucets are closed.

Recommended Setup

To protect your new pump's internal valves from debris, it is highly recommended to add an inline strainer. The Johnson Pump PumpGard Inline Strainer features a transparent cover for easy inspection and prevents particles from entering the pump chambers.

Manufacturer : Johnson Pump
Manufacturer Part No : 10-13405-103