What type of hanger allows for vertical movement of the pipe?

The adjustable ring hanger is specifically designed to accommodate vertical movement of the pipe. This design allows for a degree of flexibility, enabling the pipe to expand and contract due to temperature changes without being constrained. As the material heats up during operation, it can elongate, and the adjustable ring allows for that movement, ensuring that the integrity of the piping system is maintained while minimizing stress on the joints and connections.

In a piping system, it's crucial to account for thermal expansion and contraction; hence, hangers that allow for such movement prevent potential damage or failures. The adjustable ring inherently incorporates this capability, making it the ideal choice when vertical movement is a concern.

Other types of hangers have specific functions that do not facilitate vertical movement. For instance, roller supports typically allow for horizontal movement rather than vertical. Commercial brackets generally provide fixed support without allowance for thermal movement, while riser extensions are designed to elevate the pipe, focusing more on positioning than on flexibility associated with movement.