How far apart should 4" hangers on steam piping be installed?

When installing hangers for 4-inch steam piping, the proper spacing is critical to ensure the support system can adequately manage the weight of the pipe, while also accommodating thermal expansion and contraction. The correct distance for hangers installed on 4-inch steam piping is 17 feet.

This spacing allows for proper support of the piping system, reducing the risk of sagging or excessive stress on the pipe and joints. Maintaining appropriate spacing is crucial for both safety and efficiency in operation, as it helps prevent issues such as pipe misalignment and leaks. Each of the other options—13 feet, 15 feet, and 19 feet—do not conform to the standard practices for steam piping, which is why they are not the right choice in this context.