ARO Chop-Check Piston Pumps

Moving high-viscosity adhesives, sealants, and greases presents unique challenges in industrial operations. When pumps struggle with demanding materials, everything slows down—unplanned maintenance drags out production, material waste drives up costs, and inconsistent flow impacts application quality. To keep production running efficiently, you need pumping solutions built specifically for the viscous and abrasive materials you work with every day.

Trusted Solutions for Challenging Materials

ARO Chop-Check pneumatic piston pumps handle viscosities from 15,000 to over 1,000,000 cPs with reliable, continuous operation. The unique primer piston design feeds material directly into the pump, maintaining prime even when thick compounds form cavities or don't level off naturally. Mechanical flat check valves ensure clean material cut-off, while high-ratio configurations generate the pressure needed to move tacky substances through your entire system.

Applications Where Chop-Check Pumps Excel

• Extrusion: Deliver viscous adhesives, sealants, caulking, and heavy lubricants to application points at precise pressure and flow rates for consistent bead quality and coverage.
• Transfer & Supply: Move heavy greases, printing inks, mastics, and other thick materials efficiently with flow rates up to 12.2 gpm—keeping your production equipment supplied without interruption.
• Lubrication: Dispense heavy-duty greases and lubricants to critical machinery, even in continuous 24/7 operations.
• Typical Materials: Caulking compounds, construction sealants, mastics, heavy industrial lubricants, printing inks, thick adhesives, high-viscosity greases.

Reduce Downtime with Proven Pneumatic Piston Pump Technology

Pneumatic operation means fewer moving parts, simpler maintenance, and no risk of motor burnout. When maintenance is needed, service is straightforward—pneumatic components are robust, field-serviceable, and designed for long life even in harsh industrial environments.

Maintain Consistent Flow and Application Quality

Smooth, pulsation-free delivery ensures your application equipment receives material at the precise pressure and flow rate your process demands. Whether you're extruding sealants, transferring heavy greases, or dispensing thick lubricants, Chop-Check pumps maintain consistency that keeps quality high and rework low.

Lower Your Total Cost of Ownership

Fewer breakdowns mean less emergency maintenance. Reliable performance means less material waste. Faster cycle times mean higher throughput. The result: lower operating costs and better return on your equipment investment.

Application-Tested Solutions

Whether you're extruding viscous adhesives and sealants at precise pressures, transferring heavy greases and inks at high volumes, or lubricating equipment with heavy-duty greases, ARO Chop-Check pumps deliver at the application point with the flow rate and pressure your process demands.

Comprehensive Support from Specification to Service

Our technical team brings decades of experience in viscous material handling. We help you select the right pump configuration for your specific materials and application requirements, then provide ongoing support to optimize performance and keep your operation running.

Complete Chop-Check Pump Range