ARO chop-check pumps are available in a wide range of ratios, displacements, and materials of construction to meet your application needs. For additional help with selecting the pump that best fits your application, please contact our technical support staff at 1-888-339-2060.

Piston Pumps Brochure

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650698-C43 Chop-Check Pumps

  • 65:1 Ratio, 6" Air Motor
    1.3 GPM (5.1 LPM) flow
    0 - 7,475 psi (0 - 515.5 bar) fluid pressure

  • Great for high fluid pressure applications or when air pressure is limited
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free operation
    Durability - Hard chrome plated plunger and cylinder improves abrasion resistance
    Versatility - Multiple mounting configurations to meet your application needs
    Environmentally Sound - Optional muffler helps pump meet OSHA requirements
    Serviceability - Minimal part count and modular design allow for quick repairs to minimize downtime
    Typical Applications - pumping sealants, adhesives, epoxies, inks, lubricants, urethane, silicone, and caulk.

650698-C43 Pump Specifications | 650698-C43 Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650491-X43-B Chop-Check Pumps

  • 12:1 Ratio, 4-1/4" Air Motor
    3.2 GPM (12.3 LPM) max flow
    0 – 2,085 psi (0 – 143.8 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal part count combined with Tie Rod construction for simple, efficient repairs

650491-X43-B Pump Specifications | 650491-X43-B Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650871-XXE-C Chop-Check Pumps

  • 13:1 Ratio, 8" Air Motor
    12.2 GPM (46.3 LPM) max flow
    390 – 1,900 psi (26.9 – 131 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal part count combined with Tie Rod construction for simple, efficient repairs

650871-XXE-C Pump Specifications | 650871-XXE-C Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650875-XXE-C Chop-Check Pumps

  • 20:1 Ratio, 10" Air Motor
    10.5 GPM (39.7 LPM) max flow
    600 – 2,250 psi (41.4 – 155.2 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal part count combined with Tie Rod construction for simple, efficient repairs

650875-XXE-C Pump Specifications | NM2C23H-A1-C6F Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650492-X43-B Chop-Check Pumps

  • 23:1 Ratio, 4-1/2" Air Motor
    1.8 GPM (6.9 LPM) max flow
    0 – 3,690 psi (0 – 254.5 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal part count combined with Tie Rod construction for simple, efficient repairs

650492-X43-B Pump Specifications | 650492-X43-B Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650691-X43-B Chop-Check Pumps

  • 23:1 Ratio, 6" Air Motor
    3.2 GPM (12.3 LPM) max flow
    0 – 4,215 psi (0 – 290.7 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal part count combined with Tie Rod construction for simple, efficient repairs

650691-X43-B Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650888-XXD Chop-Check Pumps

  • 28.1 Ratio, 8" Air Motor
    6 GPM (22.7 LPM) max flow
    840 – 3,360 psi (57.9 – 231.7 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal part count combined with Tie Rod construction for simple, efficient repairs

650888-XXD Pump Specifications | 650888-XXD Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650971-XXE-C Chop-Check Pumps

  • 30:1 Ratio, 12" Air Motor
    12.2 GPM (46.3 LPM) max flow
    900 – 3,250 psi (62.1 – 224.1 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal part count combined with Tie Rod construction for simple, efficient repairs

650971-XXE-C Pump Specifications | 650971-XXE-C Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 67120-P43 Chop-Check Pumps

  • 43:1 Ratio, 4-1/4" Air Motor
    0.7 GPM (2.8 LPM) max flow
    0 – 6,549 psi (0 – 451.7 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal fluid section part count for simple, efficient repairs

67120-P43 Pump Specifications | 67120-P43 Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 67121-P43 Chop-Check Pumps

  • 43:1 Ratio, 4-1/4" Air Motor
    0.7 GPM (2.8 LPM) max flow
    0 – 6,549 psi (0 – 451.7 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability- Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability- Hard chrome plated plunger improves abrasion resistance
    Versatility- Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound- Optional Muffler ensures pump meets OSHA specifications
    Serviceability- Minimal fluid section part count for simple, efficient repairs

67121-P43 Pump Specifications | 67121-P43 Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650889-XXD Chop-Check Pumps

  • 44:1 Ratio, 10" Air Motor
    6.0 GPM (22.9 LPM) max flow
    1320 - 3960 psi (91.0 - 273.1 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Hard chrome plated plunger improves abrasion resistance
    Versatility - Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound - Optional Muffler ensures pump meets OSHA specifications
    Serviceability - Minimal part count combined with Tie Rod construction for simple, efficient repairs

650889-XXD Pump Specifications | 650889-XXD Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650891-XXD-C Chop-Check Pumps

  • 44:1 Ratio, 8” Air Motor
    3.8 GPM (14.3 LPM) max flow
    1,320 – 5,964 psi (91 – 411.3 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Hard chrome plated plunger improves abrasion resistance
    Versatility - Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound - Optional Muffler ensures pump meets OSHA specifications
    Serviceability - Minimal part count combined with Tie Rod construction for simple, efficient repairs

650891-XXD-C Pump Specifications | 650891-XXD-C Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650692-X43-B Chop-Check Pumps

  • 23:1 Ratio, 12" Air Motor
    18.1 GPM (68.6 LPM) max flow
    2,070 psi (142.8 bar) maximum fluid pressure

  • Designed for medium- to high-viscosity UV/EB materials
    Engineered to minimize shear and thermal energy to eliminate curing of UV/EB materials
    Reliability - Eliminating downtime, the unbalanced air valve ensure stall-free operation
    Durability - Chrome-plated plunger and cylinder improves abrasion resistance
    Performance - High-flow inlet valve optimizes suction and ensures proper priming at start-up
    Serviceability - Minimal part count and modular design allows quick repair to minimize downtime
    Plunger Shroud - Covered plunger rod to keep UV rays from curing material

650692-X43-B Pump Specifications | 650692-X43-B Operators Manual

ARO, Chop-Check Pumps, Chop-Check Pumps Piston PumpsARO 650989-XXD Chop-Check Pumps

  • 23:1 Ratio, 12" Air Motor
    18.1 GPM (68.6 LPM) max flow
    2,070 psi (142.8 bar) maximum fluid pressure

  • Designed for medium- to high-viscosity UV/EB materials
    Engineered to minimize shear and thermal energy to eliminate curing of UV/EB materials
    Reliability - Eliminating downtime, the unbalanced air valve ensure stall-free operation
    Durability - Chrome-plated plunger and cylinder improves abrasion resistance
    Performance - High-flow inlet valve optimizes suction and ensures proper priming at start-up
    Serviceability - Minimal part count and modular design allows quick repair to minimize downtime
    Plunger Shroud - Covered plunger rod to keep UV rays from curing material

650989-XXD Pump Specifications | 650989-XXD Operators Manual