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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.
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.
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.
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.
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.
(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.
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.
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.
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.
| 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) |
"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."
Marine toilet discharge systems
Holding tank pump-out systems
Black water and gray water transfer
Boats, yachts, and RV sanitation systems
Jabsco is a globally trusted name in marine sanitation solutions, known for engineering pumps that deliver reliable performance in harsh conditions. The Sealed Macerator Self-Priming Pump offers a dependable, low-maintenance solution for onboard waste handling.
Upgrade your sanitation system with the Jabsco Sealed Macerator Self-Priming Pump – 12V – 18590-2092, a durable, efficient pump designed to keep your marine waste system running smoothly.
WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.
Manufacturer : Jabsco
Manufacturer Part No : 18590-2092
UPC : 671880564373
Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
US$40
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