hzhdven 12V RV Macerator Pump 12 GPM — Portable 3" Waste Pump with Garden-Hose Discharge & Self-Priming

The hzhdven 12V RV Macerator Pump is a compact, portable sewage pump that macerates solids and evacuates 3" RV waste tanks quickly via a garden-hose discharge port.

Designed for RVers, boaters and campsite setups, this macerator combines a high-flow 12 GPM motor with dual stainless-steel cutters, self-priming capability and simple 12V power connections for fast, reliable waste disposal. It fits standard 3-inch RV waste outlets and carries built-in protections to reduce the risk of overheating or dry running. The pump kit includes both a cigarette-lighter lead and alligator clips for flexible hookup, plus a rinse inlet and flow-control valve to flush tanks after maceration.

How fast and how much waste will this pump handle?

This model moves up to 12 gallons per minute (about 45 LPM) and can empty a typical 150 L black tank in roughly five minutes under normal conditions. It delivers useful suction and pressure for line runs and lifts found on many RV setups without requiring extra accessories.

• Maximum flow: 12 GPM / 45 LPM
• Typical 150 L tank empty time: ≈5 minutes
• Vertical lift capability: up to 10–14 feet depending on system layout
• Designed for standard 3" RV waste outlets

What prevents clogs and how does the macerator work?

The pump uses dual stainless-steel four-blade cutters to shred solids into very small particles, greatly reducing the chance of blockages in hoses and downstream systems. A 25 mm outlet plus an included garden hose connector and rinse port let you flush residues and keep lines clear after pumping.

• Dual 4-blade stainless cutters grind waste to about 1/16" pieces
• Self-cleaning rinse port and flow-control switch for residue removal
• 25 mm outlet adapts to common hose sizes for easy disposal
• Reduces clogs by shredding solids before discharge

How safe and durable is the pump for repeated use?

Built with a heavy-duty all-copper motor and precision bearings, the unit is engineered for quieter, more efficient operation and longer life. Safety features include thermal overload protection and dry-run prevention that automatically stop the motor if conditions could cause damage, then allow restart once cooled or reset.

• All-copper motor for efficient power delivery and longevity
• Thermal overload protection prevents overheating damage
• Automatic dry-run protection stops the pump without water
• Precision bearings lower noise and wear during operation

What comes with the kit and how easy is it to install?

The pump ships ready to use with a 7-foot cigarette-lighter cable and an 11.4-inch alligator-clip cable, so you can connect to a vehicle or battery quickly. No special tools or extra mounting hardware are required for typical portable use; it’s intended for temporary hookups at dump sites, boats, or during winterization tasks.

• Includes cigarette lighter cable and alligator-clip battery lead
• Quick-release fittings for fast attachment to 3" waste ports
• Garden-hose discharge adapter and flow-control switch included
• Plug-and-play setup with no additional parts for standard use

Who is this product for? The hzhdven 12V RV Macerator Pump is aimed at RV owners, boaters, and campsite users who need a portable, high-flow solution to empty black water tanks and avoid frequent clogs. It’s also useful for winterizing and occasional off-grid sanitation tasks. This pump suits users comfortable following safety guidelines—do not run dry, avoid prolonged idle powered operation, and always follow the included maintenance steps for clearing jams and winter storage. Backed by a three-year warranty and responsive customer support, it’s a practical upgrade for anyone wanting faster, cleaner pumpouts from a compact, 12V system.