What type of copper tubing must comply with ASTM B88 or ASTM B280 for use with gasses?

• A. Type K or Type L
• B. Type M
• C. Type R
• D. Type S

Answer: (A)

Type K and Type L copper tubing are specifically designed for applications that require compliance with ASTM B88 or ASTM B280 standards, which govern the specifications for copper tubing used in various plumbing and gas applications. ASTM B88 sets forth the requirements for general use of copper water tubes, while ASTM B280 outlines the specifications for copper refrigerant tubing.

Type K copper tubing has the thickest walls, making it suitable for high-pressure situations. It is often used for underground water supply and as a gas line. Type L copper tubing, while having slightly thinner walls than Type K, is still robust enough for gas lines and is used in a variety of plumbing applications.

Both types are reliable for gas and can withstand the pressures and corrosive effects associated with gas installations, ensuring safety and compliance with plumbing codes.

Options such as Type M, Type R, and Type S do not comply with the stringent requirements of ASTM B88 and ASTM B280 for gas applications. Type M is typically used for less demanding applications, while Type R and Type S are less common in plumbing and gas installations and are not referenced in the context of these ASTM standards.