Find your piston pump in just a few clicks!
Use our Piston Pump Selector Tool to find pumps that match your exact requirements. Optimize performance and reliability by choosing the right pump for your process with ARO!
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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.
Select the right range:
Small Flow - Up to 5.7 l/min (1.5 gpm)
Medium Flow - Up to 23 l/min (6 gpm)
High Flow - Up to 46.2 l/min (12.2 gpm)
High Pressure - Up to 403 bar (5850 psi), and up to 23 l/min (6 gpm)
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.
What Sets These Pumps Apart
- 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.
Small Flow / Compact Chop-Check Pumps
Use case: Localized dispensing, low-volume extrusion, or small transfer jobs
Medium Flow / Standard Production Pumps
Use case: Continuous extrusion, medium-volume transfer, lubrication
High Flow / High Capacity Pumps
Use case: Large-volume transfer, high-demand extrusion, heavy-duty industrial applications
High-Pressure / High-Ratio Specialty Pumps
Use case: Very thick, abrasive, or tacky materials; maximum fluid pressure required
Find Your Optimal Pump Configuration
We offer a complete range of Chop-Check models to match your specific viscosity, flow rate, and pressure requirements. Our technical team will help you identify the right solution for your materials and application.
Contact us today for expert guidance on selecting your Chop-Check pump, request a detailed quote, or locate your nearest authorized ARO dealer.
Resources
Chop-Check Piston Pump Catalog
ARO Piston Pump Packages
Accessories
Explore our range of fluid regulators, inlet/outlet accessories, service kits, valves, cylinders and mounting accessories to customize your piston pump. ARO offers a variety of spare parts and accessories to facilitate fluid transfer, reduce pulsation, and enhance your piston pump.
Piston Pump Accessories
Piston Pumping Fundamentals
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Piston Pump Motor, Discover ARO Technologies today!
A piston pump motor is the driving force behind a piston pump — a type of positive displacement pump that moves fluids using a back-and-forth motion.
ARO Piston Pumps for Sealants and Adhesives
Why flow stability matters in adhesive production
Your formulation hasn't changed. Your process parameters look identical. Yet one batch passes quality control with flying colors while the next gets rejected for inconsistent viscosity or trapped air bubbles. The real issue? Unstable flow during transfer and dispensing.