Click to enlargeJabsco Sealed Macerator Self-Priming Pump 12V
Manufacturer: JabscoPart #: 18590-2092SKU: 31418
- 12V
- 5 ft
- Stainless Steel
Item #: 31418
Category: Marine Sanitation
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Description
Sealed Macerator Self-Priming Macerator Pump with Run-Dry Protection Waste Evacuation The Jabsco 18590 series DC macerator pump unit is the ideal solution for emptying marine holding tanks when not in a discharge restricted area. Self priming to 5ft this pump will empty a typical 30 gallon (115 Liter) holding tank in less than 3 minutes.
Duty cycle of the pump is 15 minutes continuous which means a 180 gallon (680 liter) can be emptied in a single operation It is recommended that holding tanks be flushed with several gallons of water after each pump out. This will reduce the possibility of a continued build up of sediment in the tank which could cause a potential blockage.
Fish Box and Livewell Tank Evacuation The Jabsco Macerator Pump is the ideal pump for the emptying of Fish box and livewell receptacles. Very often the livewell tank will be above the waterline of the boat, when this is the case gravity can be used to empty the livewell tank.
If not installed in this format then it is beneficial to use the Jabsco macerator pump for evacuation due to its self-priming capabilities and also it's grinding properties. Fish boxes are typically mounted into the floor of the vessel and are very often below the waterline or only partially above the waterline.
Again the Jabsco Macerator pump has the characteristics that lend themselves to this application. The bait residue particles of ice, fish scales and anything else that could potentially be found in the Fish-Box will be easily passed buy the Jabsco Macerator Pump, and the self priming capabilities are perfect for fish box installations common to many of today's sports fishing boats.
Features: Impeller: Jabsco Nitrile compound Macerator: Stainless Steel Cutter reduces particle size to 1/8" maximum. New 4 blade design Seal: Lip Type
California Prop 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Specifications
| Brand | Jabsco |
|---|---|
| Part Number | 18590-2092 |
| EverTide SKU | 31418 |
| UPC | 671880564373 |
| Voltage | 12 V |
| Material | Stainless Steel |
| Cable Length | 5 ft |
Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.
Compare similar products
 |  |  |  | |
|---|---|---|---|---|
| Voltage | 12 V | — | — | 12 V |
| Material | Stainless Steel | — | — | — |
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Returns & warranty
Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.
Jabsco productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.
Marine Plumbing & Ventilation — frequently asked
- How do I size a bilge pump?
- Bilge pumps are rated in gallons per hour (GPH), but actual output is lower once you account for hose length and vertical lift. Choose a pump rated well above your expected worst-case water intrusion, and consider a second, higher-capacity pump plus a float switch for automatic operation.
- Can I use regular garden hose for my boat’s water system?
- No. Marine plumbing uses purpose-built hose rated for the specific system — potable water, sanitation, and raw-water/bilge hoses differ in pressure rating, temperature resistance, and permeation. Using the wrong hose causes odors, leaks, or contamination.
- Why is ventilation important on a boat?
- Ventilation clears moisture that causes mildew and rot, and — critically on gasoline boats — clears fuel vapors from the engine compartment before starting. Blowers, cowl vents, and dorade boxes keep air moving through cabin and engine spaces for safety and comfort.
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