Jabsco Sealed Macerator Self-Priming Pump 12V – 18590-2092

Description

Jabsco Sealed Macerator Self-Priming Pump – 12V – 18590-2092

The Jabsco Sealed Macerator Self-Priming Pump is a powerful, reliable marine waste evacuation pump engineered to handle sewage and waste water efficiently in demanding onboard sanitation systems. Featuring a fully sealed motor and housing, this pump delivers dependable performance while protecting critical components from moisture intrusion and corrosion.

Designed for 12V DC marine electrical systems, the Jabsco sealed macerator pump is ideal for toilet discharge, holding tank evacuation, and waste transfer applications on boats, yachts, and RVs.

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High-Efficiency Macerating Performance

Equipped with hardened stainless-steel macerator blades, the pump grinds waste and toilet paper into a fine slurry before discharge. This allows for smooth pumping through longer hose runs and varied plumbing layouts while minimizing the risk of clogs.

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Self-Priming Design

The self-priming capability allows the pump to be mounted above the waste source, offering flexible installation options and consistent operation even in challenging layouts.

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Fully Sealed Motor for Reliability

The sealed motor design protects internal components from water exposure, significantly increasing pump life and reliability in harsh marine environments. This makes the pump well-suited for frequent use and critical sanitation systems.

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Built for Marine Sanitation Systems

Manufactured by Jabsco, a leader in marine sanitation technology, this macerator pump is built with corrosion-resistant materials and robust construction to withstand saltwater, vibration, and continuous onboard operation.

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In the Box: 18590-2092

• (1) Jabsco Sealed Macerator Pump: 12V DC unit.

• (1) 1.5″ NPT to 1.5″ Barb Intake Port: (Depending on specific retail packaging, this may be pre-installed).

• (1) 1″ Hose Barb Discharge Port: Integrated into the pump head.

• (1) Instruction Manual: With wiring diagrams and mounting templates.

• (1) Rubber Grommet Mounting Kit: For vibration isolation.

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Key Features & Benefits

1. New Four-Bladed Chopper⁴

Older macerators often struggled with thick waste or heavy-duty toilet tissue. The 18590-2092 features a stainless steel four-bladed cutter that grinds waste into a fine slurry (particle size 1/8″ max), ensuring smooth flow through the discharge line.

2. Run-Dry Protection Device

One of the most valuable upgrades is the integrated Run-Dry Protection. If the tank goes empty and the pump continues to run, the device senses the heat buildup and shuts the motor off before the impeller melts, potentially saving you from a costly replacement.

3. Sealed Motor & Manual Turn-Key

• Sealed Design: The motor is O-ring sealed and features a seamless shell to prevent internal corrosion in wet bilge environments.

• Manual Over-Ride: If the pump becomes jammed by a foreign object (like a wet wipe), there is a slotted shaft at the rear of the motor (under a rubber cap). You can use a screwdriver to manually turn the shaft and break the clog loose without taking the pump apart.

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Technical Specifications

Feature	Details
Model Number	18590-2092
Voltage	12V DC
Flow Rate	12 GPM (45 LPM)
Amp Draw	16 Amps (20A Fuse Recommended)
Self-Priming	Up to 5 ft (1.5m)
Intake Port	1.5″ (38mm) Male Thread / Barb Combo
Discharge Port	1″ (25mm) Hose Barb
Weight	5.0 lbs (2.3 kg)

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Pro-Tip for Maintenance:

“To keep your macerator running smoothly, always flush the system with fresh water after emptying your black water tank. If the boat is going to sit for a long period, adding a small amount of vegetable oil or specialized pump lubricant to the tank and running it through the pump will keep the rubber impeller from ‘sticking’ to the housing walls.”