MRGVFLO 12V RV Macerator Pump – Portable 12 GPM Waste Pump, 10 ft Lift, Garden-Hose Rinse

MRGVFLO's 12V RV Macerator Pump is a portable sewage pump that macerates solids and evacuates RV black water tanks quickly through a 3" outlet, delivering up to 12 GPM and a 10 ft lift.

Designed for RVers, boat owners and campsite users who need a fast, reliable way to empty waste tanks, this compact macerator combines dual stainless-steel cutters, a garden-hose rinse port and built-in protections into a plug-and-play unit. It connects to standard 3" RV waste outlets, runs on 12 V DC, and is built to reduce clogs while shortening dump times.

How fast will it empty my RV black water tank?

This pump moves sewage at up to 12 gallons per minute (about 45 LPM), so a typical 150 L black water tank can be pumped out in roughly five minutes under normal conditions. The pump also provides 15 PSI and can push waste up to 10 feet vertically.

• 12 GPM (45 LPM) flow rate
• 15 PSI discharge pressure for long-distance transfer
• 10 ft vertical lift capability
• Designed for standard 3" RV outlets

What prevents clogs and how does the maceration work?

MRGVFLO uses dual four-blade stainless cutters to shear solids into very small particles, reducing clog risk and allowing smooth passage through the 25 mm outlet. The unit includes a self-cleaning rinse path and a garden-hose connection with a flow-control switch to flush remaining residue after pumping.

• Dual stainless-steel 4-blade cutters that grind to ~1/16" particles
• Anti-clog shaping cuts blockage risk by about 95%
• 25 mm outlet plus garden-hose rinse port for residue removal
• Flow-control switch for easy rinsing and clean-up

How do I power and protect the pump during use?

The pump runs from 12 V DC and includes both a 7 ft cigarette-lighter cable and an 11.4" alligator-clip cable for quick hookups to vehicle batteries or accessory outlets. It’s driven by an all-copper motor with thermal overload and dry-run protection that will shut the unit off automatically if overheated or starved of water.

• Works on 12V DC (requires 7–15 A)
• Includes cigarette-lighter and alligator-clip power leads
• Heavy-duty all-copper motor with precision bearings
• Thermal overload and dry-run protection to prolong life

What safety or maintenance steps should I follow?

Always supply continuous fresh water through the inlet while the pump runs—operating dry can permanently damage the impeller and motor. After use, drain residual water, inspect and clean the strainer, and protect the unit from freezing; if the impeller jams, cut power and use the clearing port to remove debris before restarting.

• Never run the pump dry; always use continuous water supply
• Drain and clean after each use; prevent freezing in cold weather
• Disconnect power before clearing jams; rotate clearing port manually
• Contact support if problems persist; 3-year warranty included

Who is this for? The MRGVFLO 12V macerator is built for RV owners, boaters and outdoor professionals who need a fast, portable and low-clog solution for waste tank disposal. It's ideal for routine RV dump station visits, winterization tasks, off-grid camping or any situation where a compact, robust pump with easy hookups and an integrated rinse option speeds cleanup and reduces maintenance time.