MRGVFLO 12V RV Macerator Pump — 12 GPM High-Flow, Garden-Hose Rinse Port, Quick-Release 3" Fit

MRGVFLO 12V RV macerator pump is a portable, high-flow sewage pump that shreds waste and flushes RV black tanks quickly and safely for off-grid disposal.

Designed for RVs, boats and campsites, this 12-volt macerator combines a powerful all-copper motor, dual stainless-steel blades and a garden-hose rinse port so you can empty, dilute and flush your waste tank without hauling heavy containers. It connects directly to standard 3-inch RV outlets, runs from a cigarette lighter or battery clips, and includes built-in protections to reduce the risk of overheating or dry-run damage when used as directed.

How fast will this pump empty my RV black tank?

Expect rapid emptying: the pump delivers up to 12 GPM (about 45 LPM), capable of removing roughly 150 liters in around five minutes under normal conditions. Actual time varies with hose length, lift height and how diluted the contents are.

• Flow rate: 12 gallons per minute (45 L/min)
• Typical drain time: ~5 minutes for a 150L tank
• Vertical lift: up to 10 feet (3.2 ft suction lift stated for inlet)
• Pressure capability: ~15 PSI for longer runs

What prevents the pump from clogging or being damaged?

This model uses dual 4-blade stainless cutters to grind solids into fine particles, lowering clog risk and making wastewater easier to transport. A self-clean rinse port lets you purge residual debris with a garden hose, and the pump has thermal overload plus dry-run safeguards to protect the motor.

• Cutting size: grinds solids to about 1/16-inch particles
• Self-clean feature: 25mm outlet with garden hose connector
• Safety: thermal overload and automatic shutoff for dry-run protection
• Maintenance: manual clearing port for jam removal when powered off

How do I power and connect the macerator on the road?

The pump is plug-and-play: it includes a 7-foot cigarette-lighter cable plus 11.4-inch alligator clips for direct battery connection. It’s tailored for 12V DC systems (7–15 A draw) and mates to standard 3-inch RV waste outlets for fast setup.

• Included cables: cigarette-lighter plug and battery alligator clips
• Power spec: 12V DC, 7–15 amps recommended
• Outlet compatibility: designed for 3-inch RV waste fittings
• Quick release: fast-connect suction collar for secure hookup

What routine care keeps the pump reliable season after season?

Regular rinsing through the freshwater inlet, emptying residual water after use, and protecting the unit from freezing are the best ways to extend service life. If the impeller jams, always disconnect power and use the manual clearing port before restarting.

• Rinse after each use using the garden hose port
• Drain residual water and store in frost-free conditions
• Inspect strainer and clear debris with power removed
• Do not run the pump dry or restart immediately after thermal shutdown

Who this is for: Owners of RVs, campervans, and small boats who need a portable, reliable solution to empty black-water tanks without towing, lifting or waiting for dump-station availability. It’s well suited to frequent travelers, winterizers, and anyone who wants a faster, cleaner option for off-grid sewage disposal—provided users follow the water-feed and safety guidelines to avoid damage. Backed by a three-year warranty and 24/7 platform support, the MRGVFLO macerator offers convenience for routine tank maintenance and emergency dumps alike.