Flojet macerator pump 12V 18555-000A — RV/Camper waste pump, 9 GPM, stainless steel grinder

The Flojet 18555-000A macerator pump is a compact 12V waste pump that quickly grinds and removes RV or camper holding-tank contents through an easy 3/4" garden hose connection.

Compact, powerful, and built for travel, this Flojet macerator replaces bulky sewer hoses with a smaller-diameter outlet while providing fast emptying and reliable maceration. Designed for intermittent duty use in camper and RV systems, the unit includes a stainless steel grinder, self-priming motor, remote on/off switch, rinse/back-wash valve, and a carry case for portability. It handles typical black- and gray-water waste (not non-organic solids such as rags or wipes) and delivers up to 9 gallons per minute so you can empty common holding tanks quickly and with less hassle.

How fast will this pump empty my RV tank?

Performance depends on tank size and hose routing, but the Flojet 18555-000A is engineered for rapid emptying. Typical results show a 30–40 gallon tank emptied in just a few minutes when properly installed and powered by a 12V source.

• Up to 9 gallons per minute flow rate.
• Example: empties a 30-gallon tank in under 3 minutes under optimal conditions.
• Self-priming design reduces setup time before pumping.

What waste materials can the stainless steel macerator handle?

The stainless steel grinder breaks waste into much smaller particles to reduce clogging and maintain steady flow through a 3/4" hose. It is intended for organic wastewater and typical RV solids; avoid pumping non-organic items that could damage the blades or motor.

• Macerates solids down to about 1/8" particles for smoother discharge.
• Not suitable for rags, feminine products, diapers, or other non-organic solids.
• Regular rinse/back-wash can help prevent buildup and odors.

How easy is it to install and operate during a trip?

Installation and use are straightforward for most RV setups: connect the 3/4" garden hose, attach power to a 12V source, and operate via the included remote switch. The compact design and carry case make storage and transport much simpler than large sewer hoses.

• Remote on/off switch with 6' wire harness for convenient activation.
• 3/4" garden hose connection replaces bulky 3" hoses for easier handling.
• Carry case keeps pump and accessories organized while traveling.

What should I know about power and duty cycle?

The pump runs on standard 12V DC and draws up to a peak current suitable for most RV electrical systems. It is intended for intermittent duty rather than continuous industrial use—ideal for periodic tank emptying while camping or on the road.

• Operates on 12V DC electrical systems; maximum draw around 16.5 amps under load.
• Designed for intermittent duty—cycle times between uses recommended.
• Fully enclosed motor protects internal components from shaft exposure and debris.

Who this is for: The Flojet 18555-000A macerator pump is aimed at RV owners, camper van travelers, and outdoor enthusiasts who want a faster, cleaner, and more compact way to empty holding tanks. Choose this unit if you need quick pump-out times, a compact hose connection for easier storage, and a robust stainless-steel grinder for dependable waste maceration—while avoiding the routine use of non-organic solids that could damage the system.