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NM2328A-11-X11 2-Ball Piston Pump

28:1 Ratio
3″ Air Motor
0.38 GPM (1.4 LPM) Max Flow
Max Fluid: 4,200 psi

Overview

Simply Versatile

2-ball pumps are among the most versatilein the ARO® line. They are capable of handling applications fromsimple transfer to the extrusion of low- to medium- viscositymaterials up to 100,000 centipoise (cPs) with fluid delivery up to18.1 gpm (68.6 L/min).

Applications advantages of 2-balls:

Spray: 2-ball pumps deliver the constant flow rate andpressure needed for consistent and efficient coatingsapplications
Transfer & Supply: Depending on themodel, some 2-ball pumps can achieve flow rates up to 18.1 gpm,providing dependable results
Extrusion: 2-ball pumpsgenerate pressure to handle extrusion of low-tomedium-viscosity
Lubrication: ARO® 2-balls pumpsprovide the flow and pressure required for moving light oils andgrease lubricants
High Pressure Cleaning: ARO® WashPump Packages are portable and offer the the right option forindustrial cleaning applications

Materials advantages of 2-balls:

Sheer sensitive materials: ARO® 2-ball pumps minimize friction points to prevent fluid shear, when compared to other similar pumping technologies
Abrasive and high solid materials: ARO 2-ball pump minimize friction points and allow smooth passages to maintain fluid consistency
Optional ceramic coating provides an even stronger defense against highly abrasive fluids like paint and glass-filled sealer

Specifications

Ratio

28:1

Stroke

3”

Material Inlet

1/2” NPT(F)

Material Outlet

1/4” NPT(M)

Air Inlet (female)

1/4” NPT(F)

Air Inlet Pressure Range psi (bar)

0 – 150 (0 – 10.3)

Fluid Pressure Range psi (bar)

0 – 4

Max Cycles/Minute

125

Displacement/Cycle cu in (cm3)

1.4 (22.9)

Cycles/gal (L)

157.5 (43.5)

Flow @ 60 Cycles gpm (L/min)

0.38 (1.4)

Noise Level @ 60 psi dBA

85 @100 psi

Weight* lb (kg)

13 (5.9)

Available Models

Pump Model**

Lower Pump Material

Plunger Material

Upper Packings

Lower Packings

Lower Pump Model

Pump Service Kit

NM2328A-11-311

440 Stainless Steel

PTFE

.25” NPT(M)

637006-3

NM2328A-11-G11

440 Stainless Steel

UHMW-PE

1.25” NPT(M)

637006-2

NM2328A-11-S11

440 Stainless Steel

UHMW-PE

1.25” NPT(M)

637006-3

Packages

Cart Mount5 Gallon

Pail Ram5 Gallon

Model No.

Air Inlet Pressure Range psi (bar)

Fluid Pressure Range psi (bar)

Flow @ 60 Cycles per Minute gpm (L/min)

Displacement per Cycle cu in (mL)

Lower Pump Material

Plunger Material

Packing Material

Air Motor

Air Motor Repair Kit

Lower Pump End Series

Lower Pump Repair Kit

NP328D01-1

0 – 150(0 – 10.3)

0 – 4

200(0 – 289.7)

0.38(1.4)

1.4(24.0)

Hardened Stainless Steel

UHMW-PE/Leather (staggered)

66914

637316

66066-2

NP328D01-2

0 – 150(0 – 10.3)

0 – 4

200(0 – 289.7)

0.38(1.4)

1.4(24.0)

Hardened Stainless Steel

UHMW-PE/Glass-filledPTFE (staggered)

66914

637316

66066-3

NP328D01-3

0 – 150(0 – 10.3)

0 – 4

200(0 – 289.7)

0.38(1.4)

1.4(24.0)

Hardened Stainless Steel

UHMW-PE/Leather(staggered)

66914

637316

66066-2

NP328D01-4

0 – 150(0 – 10.3)

0 – 4

200(0 – 289.7)

0.38(1.4)

1.4(24.0)

Hardened Stainless Steel

UHMW-PE/Glass-filledPTFE (staggered)

66914

637316

66066-3

NP328D01-6

0 – 150(0 – 10.3)

0 – 4

200(0 – 289.7)

0.38(1.4)

1.4(24.0)

Hardened Stainless Steel

UHMW-PE/Glass-filledPTFE (staggered)

66914

637316

66066-3

NP328D02-1

0 – 150(0 – 10.3)

840 – 4

200(57.4 – 285.7)

0.38(1.4)

1.4(24.0)

Hardened Stainless Steel

UHMW-PE/Leather(staggered)

66914

637316

66066-2

NP328D02-2

0 – 150(0 – 10.3)

840 – 4

200(57.4 – 285.7)

0.38(1.4)

1.4(24.0)

Hardened Stainless Steel

UHMW-PE/Glass-filledPTFE (staggered)

66914

637316

66066-3

NM2328A-11-X11 2-Ball Piston Pump

Overview

Simply Versatile

Applications advantages of 2-balls:

Materials advantages of 2-balls:

Specifications

Available Models

Packages

Cart Mount5 Gallon

Pail Ram5 Gallon

Downloads

NM2328A-X PISTON PUMP 2-BALL SERIES STAINLESS STEEL OPERATOR'S MANUAL

IRITS-0415-033-EN-PISTON-PUMPS-OVERVIEW

ARO 2-BALL PISTON PUMP CATALOG