GRACO Air Operated Piston Oil Pumps - 3:1 LD Series

3:1 LD Oil Pump

5:1 LD Oil Pump

Maximum Fluid Working Pressure

450 psi (31 bar, 3.10MPa)

750 psi (31 bar, 3.10MPa)

Fluid Pressure Ratio

3:1

5:1

Suction Lift (feet of oil)

10

10

Air Operation Range

20 to 150 psi (1.37 to 10.3 bar)

20 to 150 psi (1.37 to 10.3 bar)

Recommended Air Pressure (for max. life)

<125 psi (8.6 bar, 0.86 MPa)

<125 psi (8.6 bar, 0.86 MPa)

Max Recommended Pump Speed

120 cycles per minute

180 cycles per minute

Cycles Per Gallon/pound (l/kg)

7 cycles per liter (29G)

10 cycles per liter (37G)

Recommended Pump Speed (for max. life)

75 cycles per minute or lower

75 cycles per minute or lower

Wetted Parts

Zinc plated carbon, steel, aluminum, nitrile, polyuretgabe, nickle plated aluminum

Sound Pressure Level

72.9 dB(a)

72.9 dB(a)

Sound Power Level

82 dB(a)

82 dB(a)

Approximate Weight

7 pounds (3.2 kg)

7.7 pounds (3.5 kg)

Air Inlet

1/4”

1/4”

Fluid Inlet

1”

1”

Fluid Outlet

1/2”

1/2”

Free Flow*

9 gpm

7.8 gpm

*Free flow at 150 psi aire inlet pressure, using SAE 20 oil at 70° F