From the graph shown in the illustration, if the separating temperature required is to be 167°F, and the specific gravity of the oil is .98 kg/dm3 at 59°F, what size regulating ring is required? Illustration MO-0113

Correct Answer: Option B — 92 mm

Centrifuge gravity ring selection requires correcting oil specific gravity to the operating temperature using the manufacturer's nomograph MO-0113. Entering the chart at 167°F with a base specific gravity of 0.98 at 59°F dictates a 92 mm regulating ring for correct interface positioning.