What is the inside diameter listed for a 10-inch insulation pipe covering?

What is the inside diameter listed for a 10-inch insulation pipe covering?

• A. 9 1/2 Inch
• B. 10 3/4 Inch
• C. 11 Inch
• D. 10 1/2 Inch

Answer: (B)

When insulation is sized for a pipe, the inside diameter of the sleeve should match the pipe’s outer diameter so the sleeve fits around the pipe. For a 10-inch nominal pipe, the outside diameter is about 10 3/4 inches. So the inside diameter listed for the 10-inch insulation cover is 10 3/4 inches, since that matches the pipe’s outer measurement. This is why 10 3/4 inch is the correct choice.

When insulation is sized for a pipe, the inside diameter of the sleeve should match the pipe’s outer diameter so the sleeve fits around the pipe. For a 10-inch nominal pipe, the outside diameter is about 10 3/4 inches. So the inside diameter listed for the 10-inch insulation cover is 10 3/4 inches, since that matches the pipe’s outer measurement. This is why 10 3/4 inch is the correct choice.