The Chugger Pump® Stainless Steel Center Pump differs from the side inlet only slightly. Like the side inlet pump, this uses a magnetic drive impeller that forces fluids from the center to the edge of the housing where it exits. The result of a center port is slightly better GPM (about 1/2 too 1 GPM improvement). This 115V beer pump is designed for homebrewing, and is relied upon as the go-to pump for brewers all over. Used to transfer hot/cold liquids between vessels.