Kohree RV Macerator Pump 12V 12 GPM – 4-Blade SK5 Grinder, Self-Priming Kit with Accessories

The Kohree RV Macerator Pump 12V is a compact, self-priming waste pump that grinds solids and pumps both black and gray water at up to 12 GPM for fast, clog-resistant RV tank emptying.

This all-in-one macerator kit is designed for RV owners, boaters, and campers who need a reliable way to empty waste tanks quickly and without shore power. It pairs a high-torque motor with an upgraded 4-blade SK5 steel grinding mechanism to reduce clogs and convert waste into a fine slurry for smoother discharge. The pump runs from any 12V battery source, includes thermal protection, and ships with the fittings and tools required for immediate use.

How fast will this macerator empty my RV tank?

The Kohree pump is rated at 12 gallons per minute under typical conditions, so a 150L (40-gallon) tank can be emptied in roughly four minutes in ideal circumstances and usually within six minutes in real-world use. Flow depends on hose length, fittings, and vertical lift, but the unit maintains steady performance for quick dump-station stops.

• Nominal flow: 12 GPM
• Typical 40-gallon emptying: ~4–6 minutes
• Delivers up to 15 PSI and a 10 ft vertical lift

Will it clog when handling toilet paper and solids?

Designed to minimize blockages, the Kohree macerator uses four spiral SK5 steel blades to grind waste and toilet paper into particles no larger than 1.6 mm (≤1/16 inch). That aggressive cutting pattern reduces clog risk substantially compared with standard pumps, making it more tolerant of heavy toilet-paper loads and mixed-consistency waste.

• 4-blade anti-clog spiral design
• Grinds to ≤1/16 inch (1.6 mm) slurry
• Reduces clog risk by an estimated 95% versus ordinary pumps

What power and protection features does the pump offer?

This macerator runs from a 12V DC source and draws just 7–10 amps, so it can operate off an RV battery without need for shore power. Copper motor windings improve durability, while built-in thermal protection prevents motor burnout during prolonged or heavy-duty pumping cycles.

• 12V operation, 7–10 amp draw
• Copper-wound motor for longer life
• Thermal overload protection for safety

What’s included and how easy is installation?

The Kohree macerator arrives as a complete kit that includes 3/4" NPT fittings, adjustable metal hose clamps, a garden hose, a manual screwdriver for emergency hand-cranking, rubber gloves, and a hard storage case. The self-priming design removes the need for manual priming and the included components mean you can install and use it immediately with minimal additional parts.

• Complete kit: fittings, clamps, garden hose, manual crank, gloves, case
• Self-priming — no manual priming required
• Suitable for RVs, boats, and winterization packs

Who is this for? The Kohree RV Macerator Pump 12V suits RV owners, boaters, campsite hosts, and anyone who needs a fast, portable solution for emptying black and gray water tanks without relying on shore power. It’s particularly useful for frequent travelers, those with limited dump-station time, or users who want a durable, low-maintenance pump that handles mixed waste and reduces clogging hassles.