It depends upon which typeof hanger you are using the clamp with and the amount of movement and the distancebetween the pipe and the nearby structural attachment point. On a variablespring, it is designed to accommodate 4 degrees of movement as a general rule.
![G-Type Variable Spring Clamp Assembly Supporting A Pipe In The Field G-Type Variable Spring Clamp Assembly Supporting A Pipe In The Field](https://farm6.static.flickr.com/5018/5526015717_deb50907f3.jpg)
G-Type Variable Spring Clamp Assembly Supporting a Pipe in the Field