CHAMPION/SPEEDAIRE 5–7.5 HP TWO STAGE. PART# 1WD21 PAC# RV15A Designed for heavy-duty industrial applications. Cast iron cylinders with cooling fins. Pumps are splash lubricated. Balanced, fan-type flywheels provide air flow for cooling pump. Rotation CCW facing flywheel. Intercoolers efficiently dissipate heat. Large Diameter Intercooler Finned Tubes – Max efficiency High…