For more information, call 800-483-4981 Following in the tradition of its air operated counterpart, Ingersoll Rand / ARO's hydraulic piston pump is the fluid professional's direct path to trouble free pumping. When the application points to the need for hydraulic as your pump's energy medium, let the ARO hydraulic pump properly close the loop. IntelliSurvey ASM Two-Ball Pumps 650943-X4X-B | 650940-XXD-B | 650944-XXX-B Two-ball piston pumps are the most versatile type of piston pump capable of transferring a wide range of low to medium viscosity fluids (0 - 25,000 cPs). ARO two-ball pumps can provide up to 6000 psi fluid pressure and are available in a wide range of packing options to accommodate an array of chemical compatibilities. Four-Ball Pumps 650950-X4B | 650949-X4B Four-ball piston pumps are perfect for higher volume and recirculation applications involving low viscosity fluids (0 – 5,000 cPs). ARO four-ball pumps are constructed of stainless steel and are available in a wide range of packing materials to maximize fluid compatibility. Additionally, the plunger rod and cylinder tube are ceramic coated to fight the effects of abrasion and scoring. Chop-Check Pumps 650941-XXE-C | 650934-X43-C | 650935-X43-C Chop-check (extrusion) pumps are most frequently utilized in the most difficult of applications, as they are designed to move medium to high viscosity fluids (15,000 to 1,000,000+ cPs) such as caulking, heavy lubricants, mastics, sealers, and inks. ARO extrusion pumps are available in a wide variety of materials of construction to accommodate your pumping needs.