ARO two-ball pneumatic piston 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, Two-Ball, Pneumatic Piston PumpsARO NM2C23H-A1-C6F Two-Ball Pneumatic Piston 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

NM2C23H-A1-C6F Pump Specifications | NM2C23H-A1-C6F Operators Manual

ARO, Two-Ball, Pneumatic Piston PumpsARO 61204X-X Two-Ball Pneumatic Piston Pumps

  • 1:1 Ratio, 2" Air Motor
    18.0 GPM (68.1 LPM) max flow
    0-150 psi (0 - 10.3 bar) fluid pressure

  • Durability - Proven design ensures lowest total cost of ownership
    Versatility - Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound - Optional muffler ensures pump meets OSHA specifications
    Serviceability - Ease of service and repairs through minimal part count

61204X-XF Operators Manual

ARO, Two-Ball, Pneumatic Piston PumpsARO NM2202X-X1-X31 Two-Ball Pneumatic Piston Pumps

  • 2:1 Ratio, 2" Air Motor
    2.15 GPM (8.14 LPM) max flow
    0 - 351 psi (0 - 24.2 bar) fluid pressure

  • Available in Stainless Steel and Carbon Steel Construction
    Reliability - Proven air motor design ensures stall-free, ice-free pump operation
    Durability - Hard chrome plated plunger improves abrasion resistance
    Versatility - Available in a wide range of materials to meet your application needs
    Environmentally Sound - Standard muffler ensures pump meets OSHA specifications
    Serviceability - Minimal fluid section part count for simple, efficient repairs

NM2202A Operators Manual | NM2202A Pump Specifications

NM2202B Operators Manual | NM2202B Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO NM2304X-X1-X11 Two-Ball Pneumatic Piston Pumps

  • 4:1 Ratio, 3" Air Motor
    2.1 GPM (8.0 LPM) max flow
    0 - 600 psi (0 - 41.4 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Proven air motor design ensures stall-free, ice-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior abrasion resistance
    Versatility - Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound - Standard muffler ensures pump meets OSHA specifications
    Serviceability - Minimal fluid section part count for simple, efficient repairs

NM2304A Operators Manual | NM2304A Pump Specifications

NM2304B Operators Manual | NM2304B Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650408-X-B Two-Ball Pneumatic Piston Pumps

  • 9:1 Raito, 4-1/4" Air Motor
    2.9 GPM (10.8 LPM) max flow
    0 - 1350 psi (0 - 93.1 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior abrasion resistance
    Versatility - Available in a wide range of materials to meet your application needs
    Environmentally Sound - Optional muffler ensures pump meets OSHA specifications
    Serviceability - Ease of service and repairs through minimal part count

650408-X-B Operators Manual | 650408-X-B Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650409 - X Two-Ball Pneumatic Piston Pumps

  • 9:1 Ratio, 4-1/4" Air Motor
    2.9 GPM (10.8 LPM) max flow
    0 - 1350 psi (0 - 93.1 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 Rod and Tube for superior abrasion resistance
    Versatility - Available in a wide range of materials to meet your application needs
    Environmentally Sound - Optional muffler ensures pump meets OSHA specifications
    Serviceability -Minimal fluid section part count for simple, efficient repairs

650409 - X Operators Manual | 650409 - X Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650453-X Two-Ball Pneumatic Piston Pumps

  • 9:1 Ratio, 4-1/4" Air Motor
    2.8 GPM (10.5 LPM) max flow
    0 - 1350 psi (0 - 93.1 bar) fluid pressure

  • Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Hard chrome plated plunger improves abrasion resistance
    Versatility - Available in a wide range of materials to meet your application needs
    Environmentally Sound - Optional muffler ensures pump meets OSHA specifications
    Serviceability - Minimal fluid section part count for simple, efficient repairs

650453-X Operators Manual

ARO, Two-Ball, Pneumatic Piston PumpsARO 613112-XXF-C Two-Ball Pneumatic Piston Pumps

  • 10:1 Ratio, 8" Air Motor
    18.1 GPM (68.6 LPM) max flow
    300 -1200 psi (20.7 - 82.8 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 ease of service & repairs

613112-XXF-C Operators Manual | 613112-XXF-C Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650866-XXD-B Two-Ball Pneumatic Piston Pumps

  • 10:1 Ratio, 8" Air Motor
    18.1 GPM (68.6 LPM) max flow
    300 - 1200 psi (20.7 - 82.8 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 ease of service & repairs

650866-XXD-B Operators Manual | 650866-XXD-B Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650483-X4X Two-Ball Pneumatic Piston Pumps

  • 11:1 ratio, 4-1/4" Air Motor
    3.7 GPM (13.9 LPM) max flow
    330 - 1747 psi (22.7 - 120.4 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior 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

650483-X4X Operators Manual | 650483-X4X Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650867-XXD-B Two-Ball Pneumatic Piston Pumps

  • 15:1 Ratio, 10" Air Motor
    18.1 GPM (68.6 LPM) max flow
    450 - 1350 psi (31.0 - 93.1 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 fluid section part count for simple, efficient repairs

650867-XXD-B Operators Manual | 650867-XXD-B Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 613123-XXF-C Two-Ball Pneumatic Piston Pumps

  • 15:1 Ratio, 10" Air Motor
    18.1 GPM (68.6 LPM) max flow
    450 - 1350 psi (31.0 - 93.1 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

613123-XXF-C Operators Manual | 613123-XXF-C Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO NM2318B-13-X43 Two-Ball Pneumatic Piston Pumps

  • 18:1 Ratio, 3" Air Motor
    .61 GPM (2.3 LPM) max flow
    0 – 2,700 psi (0 – 186.2 bar) fluid pressure

  • Available in Stainless Steel and Carbon Steel construction
    Reliability - Proven air motor design ensures stall-free, ice-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior abrasion resistance
    Versatility - Multiple mounting configurations & materials of construction for your application needs
    Environmentally Sound - Standard muffler ensures pump meets OSHA specifications
    Serviceability - Minimal fluid section part count for simple, efficient repairs

NM2318B-13-X43 Operators Manual

ARO, Two-Ball, Pneumatic Piston PumpsARO 650484-X4X Two-Ball Pneumatic Piston Pumps

  • 22:1 Ratio, 4-1/4" Air Motor
    1.9 GPM (7.2 LPM) max flow
    660 - 3412 psi (45.5 - 235.2 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior 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

650484-X4X Operators Manual | 650484-X4X Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650683-X4X Two-Ball Pneumatic Piston Pumps

  • 23:1 Ratio, 6" Air Motor
    3.7 GPM (14.0 LPM) max flow
    690 - 3450 psi (47.6 - 238.0 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior 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

650683-X4X Operators Manual | 650683-X4X Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650967-XXD-B Two-Ball Pneumatic Piston Pumps

  • 23:1 Ratio, 12" Air Motor
    18.1 GPM (68.6 LPM) max flow
    690 - 2070 psi (47.6 - 142.8 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

650967-XXD-B Operators Manual | 650967-XXD-B Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 613124-XXF-C Two-Ball Pneumatic Piston Pumps

  • 23:1 Ratio, 12" Air Motor
    18.1 GPM (68.6 LPM) max flow
    690 - 2070 psi (47.6 - 142.8 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

613124-XXF-C Operators Manual | 613124-XXF-C Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO NM2328A-11-X11 Two-Ball Pneumatic Piston Pumps

  • 28:1 Ratio, 3" Air Motor
    0.38 GPM (1.4 LPM) max flow
    0 - 4200 GPM (0 - 289.7 LPM)

  • Integrated wet cup ensures extended pump life!!
    Reliability - Proven air motor design ensures stall-free, ice-free pump operation
    Durability - 440 Series Stainless Steel for maximum fluid compatibility
    Versatility - Multiple mounting configurations for your application needs
    Environmentally Sound - Integrated Muffler ensures pump meets OSHA specifications
    Serviceability - Ease of service and repairs through minimal part count

NM2328A-11-X11 Operators Manual | NM2328A-11-X11 Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650485-X4X Two-Ball Pneumatic Piston Pumps

  • 30:1 Ratio, 4-1/4" Air Motor
    1.3 GPM (4.9 LPM) max flow
    900 - 4500 psi (62.0 - 310.2 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior 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

650485-X4X Operators Manual | 650485-X4X Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650883-X4X-B Two-Ball Pneumatic Piston Pumps

  • 40:1 Ratio, 8" Air Motor
    3.8 GPM (14.3 LPM) max flow
    1200 - 4967 psi (82.2 - 342.6 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior 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

650883-X4X-B Operators Manual | 650883-X4X-B Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650684-X4X Two-Ball Pneumatic Piston Pumps

  • 45:1 Ratio, 6" Air Motor
    1.9 GPM (7.3 LPM) max flow
    1350 - 5459 psi (93.0 - 376.3 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Eliminating downtime, the unbalanced air valve ensures stall-free pump operation
    Durability - Ultra Coated (ceramic) Plunger Rod and Tube for superior 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

650684-X4X Operators Manual | 650684-X4X Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650863-X4D-B Two-Ball Pneumatic Piston Pumps

  • 45:1 Ratio, 10" Air Motor
    6.2 GPM (23.7 LPM) max flow
    1,350 – 4,500 psi (91.8 – 306.1 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

650863-X4D-B Operators Manual | 650863-X4D-B Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650685-X4X Two-Ball Pneumatic Piston Pumps

  • 60:1 Ratio, 6" Air Motor
    1.4 GPM (5.4 LPM) max flow
    1800 - 6000 psi (124.1 - 414.0 bar) fluid pressure

  • Integrated wet cup ensures extended pump life!!
    Reliability - Proven air motor design ensures stall-free pump operation
    Durability - Hard Chrome or Ultra Coated (ceramic) Stainless Steel Plunger Rod and Tube for superior 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

650685-X4X Operators Manual | 650685-X4X Pump Specifications

ARO, Two-Ball, Pneumatic Piston PumpsARO 650963-X4D-B Two-Ball Pneumatic Piston Pumps

  • 65:1 Ratio, 12" Air Motor
    6.2 GPM (23.7 LPM) max flow
    1950 - 5850 bar (134.5 - 403.4 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

650963-X4D-B Operators Manual | 650963-X4D-B Pump Specifications