Copper oil supply piping thickness is typically expressed in what unit?

Prepare for the HVAC D-2 License Exam. Study with flashcards and multiple-choice questions. Each question comes with hints and explanations. Get ready for your HVAC certification!

Multiple Choice

Copper oil supply piping thickness is typically expressed in what unit?

Explanation:
In the United States, copper tubing dimensions— including wall thickness for oil supply lines—are expressed in inches. Copper tube sizes are given in nominal inches, and the wall thickness is specified in inches (varying by the tube type, such as Type L, M, etc.). This standard unit keeps sizing consistent with other common piping in HVAC and plumbing, making calculations and fittings straightforward.

In the United States, copper tubing dimensions— including wall thickness for oil supply lines—are expressed in inches. Copper tube sizes are given in nominal inches, and the wall thickness is specified in inches (varying by the tube type, such as Type L, M, etc.). This standard unit keeps sizing consistent with other common piping in HVAC and plumbing, making calculations and fittings straightforward.

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