Worthington 1.5GRM Rotary Gear Pump, cast iron (CI) construction. This model features 1-1/2 inch inlet and 1-1/2 inch outlet ports for straightforward piping connections, and a shaft size of 3 inches long by 7/8 inch in diameter. The cast iron body provides durability for industrial service, and the 1.5GRM designation identifies the specific Worthington rotary gear pump configuration within the brand’s lineup. Rotary gear pumps operate by two intermeshing gears that trap and move fluid from the inlet toward the outlet, delivering a steady, positive-displacement flow characteristic of this pump type.
