Jabsco 12V Low Pressure Cyclone Centrifugal Pump – Model 50840-0012

The Jabsco 50840-0012 Cyclone is a high-performance, continuous-duty centrifugal pump designed for heavy-duty marine and industrial applications. This 12V DC pump is engineered for high-flow, low-pressure tasks such as bait tank circulation, livewell aeration, and diesel fuel transfer.

Unlike standard diaphragm pumps, the Cyclone’s centrifugal design provides a whisper-quiet operation and a consistent, non-pulsating flow. Built with a stainless steel pump head and a long-life mechanical seal, it is designed to thrive in harsh saltwater environments.

The Jabsco 50840-0012 Low Pressure Cyclone Centrifugal Pump is a compact, high-efficiency pump designed for marine circulation, washdown, and general-purpose water transfer applications. Operating on 12V DC, this pump delivers smooth, high-flow water movement at low pressure, making it ideal for systems that require steady flow rather than high-pressure delivery.

Its centrifugal pump design ensures quiet, vibration-free operation, while durable, corrosion-resistant construction makes it suitable for demanding marine environments. Lightweight and compact, the 50840-0012 is ideal for boats, sailboats, and small vessels that require reliable freshwater circulation or transfer pumps.

High-Flow, Low-Pressure Performance

Engineered for low-pressure, high-volume water movement, the Cyclone pump provides consistent flow without pulsation. This makes it perfect for applications such as:

• Air conditioning circulation loops

• Washdown or deck cleaning systems

• Livewell or baitwell water circulation

• General freshwater transfer

Efficient Centrifugal Pump Design

The pump’s centrifugal impeller design delivers:

• Smooth, continuous flow

• Quiet operation with minimal vibration

• Continuous-duty reliability for extended use

Unlike positive-displacement pumps, the Cyclone is optimized for high-volume, low-pressure circulation, not pressurized delivery.

12V DC Operation

This model operates on 12V DC power, making it compatible with most recreational vessels and small commercial boats. Its low electrical demand ensures efficient, reliable operation without overloading onboard electrical systems.

Marine-Grade Construction

Designed for durability in harsh marine environments, the 50840-0012 features:

• Corrosion-resistant housing and internal components

• Sealed motor design for moisture protection

• Vibration-resistant construction for long service life

Compact & Easy Installation

The small footprint allows flexible installation in tight engine rooms or mechanical compartments. Standard marine hose connections make it easy to integrate into existing freshwater circulation or washdown systems.

Key Features & Benefits

• High-Volume Output: Delivers a powerful flow rate of up to 29 Gallons Per Minute (110 LPM), making it ideal for rapidly cycling water in large baitwells.

• Continuous Duty Motor: Rated for 2,500 hours of operation, this pump can run non-stop for cooling systems or livewell management without overheating.

• Corrosion-Resistant Construction: Features a stainless steel pump head and motor shaft to prevent rust and degradation in saltwater or chemical applications.

• Silent & Efficient: The centrifugal impeller eliminates the vibration and "thumping" noise typical of other pump styles while maintaining low power draw.

• Fluid Versatility: Safe for use with saltwater, fresh water, and diesel fuel, and can handle high-temperature fluids up to 180°F (82°C).

Technical Specifications

Important Installation Notes

• Flooded Suction Required: As a centrifugal pump, the 50840-0012 is not self-priming. It must be mounted in a location where the pump head is below the water level (flooded suction) or manually primed before starting.

• Dry Running: Ensure the pump does not run dry, as the liquid being pumped is required to cool and lubricate the mechanical seal.

• Maintenance: The simple design allows for easy inspection of the impeller and seal, ensuring your vessel stays operational with minimal downtime.

Ideal Applications

• Marine air conditioning circulation

• Freshwater washdown systems

• Livewell and baitwell water circulation

• General-purpose freshwater transfer

• Recreational and commercial marine vessels

The Jabsco Low Pressure Cyclone Centrifugal Pump (12V – 50840-0012) delivers reliable, high-volume water flow with quiet, smooth operation, making it the perfect choice for marine circulation, washdown, or general freshwater transfer applications.

Why Buy From Anchor Express?

Anchor Express provides genuine Jabsco products with the expertise to help you choose the right plumbing for your boat. We offer competitive pricing and fast shipping to ensure your marine systems are always running at peak performance.