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NM2304X-X1-X11 2-Ball Piston Pump

4:1 Ratio
3” Air Motor
Max Flow: 2.1 GPM (8 LPM)
Max Fluid Pressure: 600 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

4:1

Stroke

3”

Material Inlet

1-1/4” NPT(F) or Immersed

Material Outlet

3/4” NPT(F)

Air Inlet (female)

1/4” NPT(F)

Air Inlet Pressure Range psi (bar)

0 – 150 (0 – 10.3)

Fluid Pressure Range psi (bar)

0 – 600 (0 – 41.4)

Max Cycles/Minute

125

Displacement/Cycle cu in (cm3)

8.2 (134.3)

Cycles/gal (L)

28.2 (7.4)

Flow @ 60 Cycles gpm (L/min)

2.1 (8.0)

Noise Level @ 60 psi dBA

85 @100 psi

Weight* lb (kg)

32 (14.5) – 46 (20.9)

Model

A in (mm)

B in (mm)

C in (mm)

NM2304A-11-X11

30.25 (768.5)

11.75 (297.7)

13.187 (334.2)

NM2304A-41-X11

55.625 (1413.0)

37.125 (942.2)

38.562 (978.7)

NM2304B-11-X11

28.125 (714.4)

9.718 (246.8)

11.096 (281.8)

NM2304B-41-X11

51.656 (1312.1)

33.25 (844.6)

34-5/8 (879.6)

Available Models

Pump Model**

Lower Pump Material

Plunger Material

Upper Packings

Lower Packings

Material Inlet

Weight lb (kg)

Pump

NM2304A-11-311

Carbon Steel

PTFE

1.25” NPT(F)

32 (14.5)

637176

NM2304A-11-511

Carbon Steel

PTFE

1.25” NPT(F)

32 (14.5)

637176

NM2304A-11-C11

Carbon Steel

UHMW-PE

1.25” NPT(F)

32 (14.5)

637228

NM2304A-41-311

Carbon Steel

PTFE

Immersed

46 (20.9)

637176

NM2304A-41-511

Carbon Steel

PTFE

Immersed

46 (20.9)

637176

NM2304A-41-C11

Carbon Steel

UHMW-PE

Immersed

46 (20.9)

637228

NM2304A-81-311

Carbon Steel

Stainless Steel

PTFE

1.25” NPT(F)

31.4 (14.3)

637176

NM2304A-91-311

Carbon Steel

Stainless Steel

PTFE

Immersed

45.4 (20.6)

637176

NM2304A-A1-311

Carbon Steel

Stainless Steel

PTFE

Immersed

31 (14.1)

637176

NM2304A-B1-311

Carbon Steel

Stainless Steel

PTFE

1.25” NPT(F)

32 (14.5)

637176

NM2304B-11-311

316 Stainless Steel

PTFE

1.25” NPT(F)

32 (14.5)

637010

NM2304B-11-31B

316 Stainless Steel

PTFE

1.25” NPT(F)

32 (14.5)

637010

NM2304B-11-C11

316 Stainless Steel

UHMW-PE

1.25” NPT(F)

32 (14.5)

637010-4

NM2304B-11-C1B

316 Stainless Steel

UHMW-PE

1.25” NPT(F)

32 (14.5)

637010-4

NM2304B-11-W11

316 Stainless Steel

PTFE

1.25” NPT(F)

32 (14.5)

637010-6

NM2304B-41-311

316 Stainless Steel

PTFE

1.25” NPT(F)

46 (20.9)

637010

NM2304B-41-C11

316 Stainless Steel

UHMW-PE

1.25” NPT(F)

46 (20.9)

637010-4

Packages

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

Air Motor

Air Motor Repair Kit

Lower Pump End Series

Lower Pump Repair Kit

NP304R01-1-B

0 – 150(0 – 10.3)

0 – 600(0 – 41.4)

2.1(8.0)

8.2(134.3)

Carbon Steel

66913

637316

67151-A-C11

637228

NP304R01-2-B

0 – 150(0 – 10.3)

0 – 600(0 – 41.4)

2.1(8.0)

8.2(134.3)

Carbon Steel

66913

637316

67151-A-311

637176

NM2304X-X1-X11 2-Ball Piston Pump

Overview

Simply Versatile

Applications advantages of 2-balls:

Materials advantages of 2-balls:

Specifications

Available Models

Packages

Downloads

NM2304B-( ) TWO - BALL PISTON PUMP SALES AND ENGINEERING DATA

NM2304B-X-X 2-BALL STAINLESS STEEL PISTON PUMP OPERATOR'S MANUAL

NM2304A-X-X 2-BALL PISTON PUMP SERIES CARBON STEEL OPERATOR'S MANUAL

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

ARO 2-BALL PISTON PUMP CATALOG