When there is contraction and expansion, it is important that there is a supporting system that allows it to take place without exerting additional forces on the pipe. This is one of the main reasons why there is a need for a good pipe support system. A loop hanger is a pipe accessory that typically supports a pipe through looping around it. By its look and functions, it can be compared to clevis hangers, split ring hangers, and clamp hangers, which are all examples of pipe hangers. However, there are qualities that set loop hangers apart from the rest.

The design of loop hangers may appear simple but is notably effective. It loops around a pipe and connects to a beam or ceiling for support. Loop hangers have keyed insert nuts to guarantee the loop hanger and insert nuts stay together. This kind of pipe support is highly recommended for the suspension of non-insulated, stationary, pipelines. Clevis hangers are also used for horizontal pipes near the ceiling. These are the first choice when supporting pipes or when sloping the pipes is an important factor.