What is the best type of hanger for supporting a horizontal run of steam/condensate piping?

For supporting a horizontal run of steam or condensate piping, a rolling hanger is particularly effective due to its design and function. Rolling hangers incorporate a mechanism that allows for movement along the length of the piping, which is crucial in systems where thermal expansion and contraction of the pipe can occur due to temperature changes inherent in steam systems.

Steam systems typically involve high temperatures, and as the pipe heats up, it expands. If the hanger is rigid, it can cause stress points in the piping that could lead to failure or leaks. A rolling hanger accommodates this movement, providing support while allowing for the necessary flexibility that prevents damage to the piping.

In contrast, the trapeze and clevis hangers are more rigid and do not provide the same allowance for movement. While they can be used in various applications, they may not be optimal in situations where thermal expansion is a significant concern. Friction clamps can provide support as well, but they generally do not allow for any movement or adjustment, which is critical in steam piping applications. Therefore, a rolling hanger is the best choice in this context, ensuring both stability and the necessary flexibility for thermal expansion.