True or False: A butterfly valve is a type of check valve.

• A. True
• B. False
• C. Depends on the application
• D. Only in certain sizes

Answer: (B)

A butterfly valve is designed for throttling flow and is characterized by a rotating disc that regulates the flow of liquid or gas through a pipe. It is primarily used in applications where a quick shut-off is required or where flow regulation is necessary.

In contrast, a check valve is specifically designed to prevent backflow in a piping system. It allows fluid to flow in one direction only, closing automatically if the flow reverses. The fundamental difference lies in their functions: butterfly valves can control the flow rate and direction, while check valves are solely for preventing backflow.

Thus, stating that a butterfly valve is a type of check valve is inaccurate. The two serve different purposes in piping systems, which is why it is correct to assert that the statement is false.