Zoeller Pump Co. has added two new models to its Shark grinder pump series. The 1.0 HP Model 818 and the 1.5 HP Model 819 join the 2.0 HP Model 820 grinder pump line. All three pumps feature an improved dual-bladed, angled cutter whose scissor-like action will shred difficult wastewater materials down to a 1/8-inch particle size. This improved cutter system delivers more torque per blade, lowering current draw during grinding cycles, which along with the cool-run motor design, will extend the service life of the pump with its cool run motor design. All models are available in either an automatic or non-automatic models.