Chop Check Piston Pumps | ARO Pumps & Parts

ARO Chop-Check Piston Pumps are designed for handling heavy, viscous, and difficult-to-flow materials that may not move efficiently with conventional transfer pumps. Their pumping action is suited to applications involving greases, sealants, adhesives, mastics, inks, heavy coatings, and other compatible high-viscosity materials. These pumps are commonly used with drum, tote, or bulk material supply systems and may be integrated with ram or follower-plate equipment depending on the application. The chop-check design helps move thick material into and through the pump, supporting production environments that require consistent material delivery to dispensing, extrusion, or process equipment. Pump selection should consider material viscosity, required delivery rate, outlet pressure, container size, operating temperature, air supply, and compatibility of wetted components. Highly viscous products may also require appropriate mounting and material-feed accessories. Browse ARO Chop-Check Piston Pump models to compare ratios, sizes, connections, and technical specifications. For replacement or system upgrades, verify the exact model number and application requirements before selecting the pump or associated service parts.