EUREKA J20 Ultra Dirty Water Pump DQB421-FB DC12V Dock Mini Pump
- Replacement dirty water pump for the EUREKA J20 Ultra robot vacuum dock. MINI PUMP DQB421-FB, DC12V design for wastewater transfer, station maintenance, stable suction performance, and reliable cleaning system operation.

The EUREKA J20 Ultra dirty water pump is a dedicated replacement component designed for the robot vacuum station or dock. This MINI PUMP, model DQB421-FB, operates on DC12V and is responsible for moving dirty water within the docking system, supporting the automatic maintenance functions of the cleaning station. It is an essential spare part for restoring correct wastewater circulation and keeping the dock working efficiently.
Built for compact integration inside the dock assembly, the pump features a durable motor housing and a lightweight pump head with hose connectors for fluid transfer. The DQB421-FB construction is intended for consistent operation in robotic vacuum service environments, where stable flow, dependable suction, and compatibility with station plumbing are important. Its DC12V power specification makes it suitable for systems designed around low-voltage operation, helping maintain safe and efficient performance.


In practical use, this pump supports the removal or transfer of used water collected during mop washing or station self-cleaning cycles. When the original component becomes worn, blocked, or unreliable, replacing it with the correct MINI PUMP can help restore the dock’s automatic cleaning processes and reduce interruptions in daily use. It is a suitable choice for service repair, maintenance, or refurbishment of the EUREKA J20 Ultra docking station, helping extend product life and return the robot vacuum system to reliable operation.












