ARO 2-Ball Pneumatic Piston Pumps

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Efficient fluid handling plays a vital role in maintaining production quality and speed. Inconsistent flow or pressure can lead to challenges like uneven application, increased waste, or operational slowdowns. For industrial operations working with low- to medium-viscosity fluids, having reliable pumping solutions helps ensure smooth, predictable performance across your processes.

Proven Solutions for Diverse Applications

ARO 2-ball pneumatic piston pumps are among the most versatile in our product line. Designed to handle materials up to 100,000 centipoise with flow rates reaching 18.1 gpm (68.5 L/min), these pumps adapt to diverse industrial needs—from spray finishing and material supply to extrusion and lubrication. The two-ball check design provides the foundation for uniform delivery, while pneumatic operation offers flexibility across multiple applications and operating conditions.

Applications Where 2-Ball Pumps Excel

Spray: Constant flow rate and pressure deliver consistent coatings applications, ensuring uniform coverage and finish quality.
Transfer & Supply: Flow rates up to 18.1 gpm (68.5 L/min) keep production lines supplied, eliminating material delivery delays. Suitable for coatings, paints, oils, and chemicals.
Extrusion: Generate pressure needed for low- to medium-viscosity materials, maintaining consistent bead quality for sealants and adhesives.
Lubrication: Move light oils and grease lubricants to critical machinery and equipment.
High-Pressure Cleaning: Portable wash pump packages for industrial cleaning applications.

What Sets These Pumps Apart

Uniform Flow for Consistent Quality
The two-ball check design delivers smooth, uniform fluid flow at precise pressure—maintaining the consistency that keeps quality high and rework low across spray, transfer, and dispensing applications.
Handle Sensitive and Abrasive Materials
Minimized friction points help prevent fluid shear, protecting sensitive materials during transfer. Smooth internal passages maintain consistency with abrasive and high-solid materials. Optional ceramic coating offers additional protection against highly abrasive fluids.
Straightforward Pneumatic Operation
Fewer moving parts mean simpler maintenance and no motor burnout risk. Pneumatic components are field-serviceable and built for long life in industrial environments.
Lower Total Cost of Ownership
Reliable performance reduces material waste and unplanned maintenance. Consistent output improves quality while lowering overall operating costs.
Comprehensive Support from Specification to Service
Our technical team brings decades of fluid handling experience. We help you select the right pump configuration for your materials and application requirements, then provide ongoing support to keep your operation running smoothly.

Small Flow / Compact 2-Ball Piston Pumps

Use case: Localized dispensing, low-volume transfer, or small-scale extrusion

650110-C 2-Ball Piston Pump & Packages

2:1 Ratio
Max Flow: 2.0 GPM (7.5 L/min)
Fluid Pressure: 0-300 PSI (0-20.7 bar)

650944-XXX-B 2-Ball Piston Pump

3.3:1 Ratio
Max Flow: 1.6 GPM (6.1 L/min)
Fluid Pressure: 165 - 3960 psi (11.4 - 273.1 bar)

AF0422 2-Ball Piston Pump & Packages

22:1 Ratio
Max Flow: 1.9 GPM (7.2 L/min)
Max Fluid Pressure: 3,412 psi (235.3 bar)

AF0430 Series 2-Ball Piston Pumps

30:1 Ratio
Max Flow: 1.3 GPM (4.9 L/min)

AF0645 Series

45:1 Ratio
6" Air Motor
Max Flow: 1.9 GPM (7.3 L/min)
Max Fluid Pressure: 5,459 psi (376.3 bar)

AF0660 Series 2-Ball Piston Pumps

60:1 Ratio
Max Flow: 1.4 GPM (5.4 L/min)
Max Fluid Pressure: 6,000 psi (413.7 bar)

NM2202X-X1-X31 2-Ball Piston Pump

2:1 Ratio
2'' Air Motor
Max Flow: 2.15 GPM (8.14 L/min)
Max Fluid Pressure: 351 psi (24.2 bar)

NM2304X-X1-X11 | 2-Ball Piston Pump

4:1 Ratio
3'' Air Motor
Max Flow: 2.1 GPM (8 L/min)
Max Fluid Pressure: 600 psi (41.4 bar)

NM2318B-13-X43 2-Ball Piston Pump

18:1 Ratio
3" Air Motor
Max Flow: 0.61 GPM (2.3 L/min)
Max Fluid Pressure: 2,700 psi (186 bar)

NM2328A-11-X11 2-Ball Piston Pump

28:1 Ratio
3" Air Motor
Max Flow 0.38 GPM (1.4 L/min)
Max Fluid Pressure: 4,200 psi (290 bar)

Medium Flow / Standard Production 2-Ball Pumps

Use case: Continuous extrusion, medium-volume transfer, lubrication, coatings

2-Ball Piston Pump 65031X-X N Series

2:1 Ratio
Max Flow: 4.2 GPM (16.1 L/min)
Fluid Pressure: 0 - 600 PSI (0 - 41.4 bar)

650943-X4X-B 2-Ball Piston Pump

0.58:1 Ratio
Max Flow: 3.1 GPM (11.9 L/min)
Fluid Pressure: 85 - 2054 PSI (5.9 - 140.7 bar)

AF0409A Series 2-Ball Piston Pump

9:1 Ratio
Max Flow: 2.8 GPM (10.5 L/min)
Max Fluid Pressure: 1,350 psi (93 bar)

AF0409C Series 2-Ball Piston Pump

9:1 Ratio
Max Flow: 2.8 GPM (10.5 L/min)
Max Fluid Pressure: 1,350 psi 93 bar)

AF0409AX3 9:1 Oil Piston Pump

9:1 Ratio
Max Flow: 2.8 GPM (10.5 L/min)
Max Fluid Pressure: 1,350 psi 93 bar)

AF0411 Series 2-Ball Piston Pumps

11:1 Ratio
Max Flow: 3.7 GPM (14 L/min)
Max Fluid Pressure: 1,747 psi (120 bar)

AF0623G Series 2-Ball Piston Pumps

23:1 Ratio
Max Flow: 3.8 GPM (14.3 L/min)
Max Fluid Pressure: 3,495 psi (241 bar)

AF0828B Series 2-Ball Piston Pump

28:1 Ratio
8" Air Motor
Max Flow: 6.27 GPM (23.7 L/min)
Max Fluid Pressure: 3,360 psi (231.6 bar)

AF0840 Series 2-Ball Piston Pump

40:1 Ratio
8'' Air Motor
Max Flow: 3.7 GPM (14 L/min)
Max Fluid Pressure: 4,967 psi (342.5 bar)

AF1045 Series 2-Ball Piston Pumps

45:1 Ratio
10" Air Motor
Max Flow: 6.27 GPM (23.7 L/min)
Max Fluid Pressure: 4,050 psi (279.3 bar)

AF1265B Series

65:1 Ratio
12" Air Motor
Max Flow: 6.27 GPM (23.7 L/min)
Max Fluid Pressure: 5,850 psi (403.3 bar)

High Flow / High Capacity 2-Ball Pumps

Use case: Bulk transfer, high-volume production, continuous-feed systems

61204X-X 2-Ball Piston Pump & Packages

1:1 Ratio
2" Air Motor
Max Flow: 18 GPM (68.1 L/min)
Max Fluid: 150 psi (10.34 bar)

650940-XXD-B 2-Ball Pump Piston Pump

0.8:1 Ratio
Max Flow: 12.9 GPM (48.8 L/min)
Fluid Pressure: 40 - 1,600 psi (2.8 - 110.3 bar)

AF0810 Series

10:1 Ratio
8" Air Motor
Max Flow: 15.6 GPM (58.9 L/min)
Max Fluid: 1,200 psi (82.7 bar)

AF1015 Series 2-Ball Piston Pumps

15:1 Ratio
10" Air Motor
Max Flow: 18.1 GPM (68.6 L/min)
Max Fluid Pressure: 1,350 psi (93 bar)

AF1223X1 Series 2-Ball Piston Pump

23:1 Ratio
12" Air Motor
Max Flow: 18.1 GPM (68.6 L/min)
Max Fluid Pressure: 2,070 psi (142.7 bar)

AF1223X5 UV/EB Series 2-Ball Pump

23:1 Ratio
12" Air Motor
Max Flow: 18.1 GPM (68.6 L/min)
Max Fluid Pressure: 2,070 psi (142.7 bar)

High-Pressure / High-Ratio Specialty 2-Ball Pumps

Use case: High-pressure extrusion, viscous materials, specialty coatings