Specially designed for 3 inch RV sewage outlet: portable 12V RV Macerator waste pump for sewage, 12GPM suction 3ft lift with garden hose discharge port, quick release sewage pump with fresh water rinse and automatic crushing function. When using, it is recommended that the freshwater inlet fittings work together to help pour and clean your black color. Segusegusegusegusegusegu! The macerator pump designed for RVs, this 12V macerator pump empties 150L sewage tanks in 5 minutes with a flow rate of 12GPM (45LPM). Built for long-distance disposal, it delivers 15 PSI pressure and a 10-foot vertical riser, seamlessly connecting to standard 3" waste outlets. The RV macerator pump features dual 4-blade stainless steel cutters to shred solids into 1/16" particles, reducing clogs by 95%. Self-cleaning feature includes a 25mm outlet and a garden hose connector with a flow control switch for effortless rinsing.