Ingersoll Rand ARO piston pumps are designed for pumping motor oil, gear oil, and transmission fluid. The LM Series pumps are available in 3:1 (2" Diameter Air Motor) and 5:1 (3" Diameter Air Motor) ratios. The Series 200 pumps are designed for industrial applications that require a 1:1 ratio. Finally, the Series 425 pumps use a large 4 1/4" air motor to pump fluids using 9:1 ratio.
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