Which color identifies Type L copper tubing?

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Multiple Choice

Which color identifies Type L copper tubing?

Explanation:
Copper tube types K, L, and M are identified by color to help you pick the right tube for the job. Type K is green, Type L is blue, and Type M is red. Therefore, blue identifies Type L copper tubing. Type L has a mid-range wall thickness, making it a common choice for many residential water and heating applications because it balances strength and cost. If you see red, that indicates Type M (thinner); green indicates Type K (thicker). Yellow isn’t a standard color used for identifying these copper tube types.

Copper tube types K, L, and M are identified by color to help you pick the right tube for the job. Type K is green, Type L is blue, and Type M is red. Therefore, blue identifies Type L copper tubing. Type L has a mid-range wall thickness, making it a common choice for many residential water and heating applications because it balances strength and cost. If you see red, that indicates Type M (thinner); green indicates Type K (thicker). Yellow isn’t a standard color used for identifying these copper tube types.

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