hzhdven RV Macerator Pump 12V 12 GPM — Portable Sewage Pump for Camper & Boat, 3" Outlet, Self-Priming with Garden-Hose Rinse

The hzhdven 12V RV macerator pump is a portable, plug-and-play sewage pump that shreds and evacuates black-water tanks quickly through standard 3" RV outlets.

If you need a reliable way to empty your RV, camper, or boat holding tank without hauling it to a dump station, this macerator pump offers fast, clog-resistant performance. Designed for 3-inch outlets, the unit pairs a high-flow macerator with a garden-hose rinse port, dual stainless cutters, and built-in protections to simplify tank maintenance on the road or at a campsite.

How fast will this pump empty my RV tank?

The hzhdven macerator delivers up to 12 GPM (about 45 LPM), meaning a typical 150 L (40 gallon) black water tank can be cleared in roughly five minutes under normal conditions. Flow performance depends on hose length, vertical lift, and how full the tank is.

• 12 GPM (45 LPM) nominal flow rate
• Designed to empty 150 L tanks in ~5 minutes
• Capable of long-distance discharge with 15 PSI pressure
• 10–14 ft vertical lift capability depending on configuration

Will it clog and how does the macerator avoid blockages?

This model uses dual stainless-steel 4-blade cutters that reduce solids into fine particles, dramatically lowering the chance of clogs. A self-cleaning rinse port with a garden-hose connector lets you flush remaining residue after pumping.

• Dual 4-blade stainless cutters grind to about 1/16-inch particles
• Self-cleaning rinse via dedicated garden-hose discharge port
• 25mm outlet size to discourage accumulation and blockages
• Flow-control switch for controlled rinsing and rinsing efficiency

How do I power and protect the pump during use?

The pump is powered by a heavy-duty all-copper motor with bearings designed for quieter, efficient operation. Safety features include thermal overload and dry-run prevention so the unit shuts off when overheating or starved of liquid, then restarts when conditions normalize.

• 12V DC operation with included cigarette-lighter and alligator clip cables
• Thermal overload protection and automatic shutoff for dry runs
• Low-noise motor with precision bearings for longevity
• Quick-release connections for fast setup and pack-down

What accessories and maintenance should I expect?

The pump includes power leads and a garden-hose-compatible discharge adapter so you can connect without extra parts. Routine maintenance is straightforward: flush the pump after use, drain residual water, protect from freezing, and clear the strainer as needed.

• Includes 7 ft cigarette-lighter cable and 11.4" alligator clip cable
• Garden-hose discharge port and quick-release fittings included
• Recommended practices: avoid running dry, don't leave powered idle, drain after use
• Manual impeller access for safe debris clearing when powered off

Who is this product for? The hzhdven 12V macerator pump is built for RV and boat owners, campsite hosts, and anyone who needs a compact, high-capacity solution for black-water disposal. It suits travelers who rely on standard 3" waste outlets and want a fast, portable system that reduces clogs and simplifies tank rinsing. If you store your rig in winter, the pump is also a practical addition to winterization kits — provided you follow freeze-protection and maintenance recommendations. Backed by a 3-year warranty and responsive support, it’s a practical upgrade for frequent campers and those who value hygienic, efficient tank management while on the move.