Jabsco Macerator Pump - 115V [18690-0000]115V AC Macerator The Jabsco AC macerator pump unit is the ideal answer to waste handling problems for marine, recreational vehicle and domestic uses. The macerator section grinds waste down to a particle size of 1 8" maximum so it can be pumped easily through a 1" hose discharge line. The pump is self priming, permitting the unit to be mounted above or below the tank in a convenient location. For optimal efficiency, locate pump as close to the waste