All backstops work on the same principle. The metal tee-pipe is hinged so that it releases in the direction of the flow toward the squeeze chute, but will not hinge back beyond vertical in reverse. Most pipe backstops are telescoped so that they can be adjusted up or down to accommodate cattle of different heights. Backstops should be adjusted to block an animal six to eight inches below the top of the tailhead. Backstops are normally held in a vertical position using chains or rubber bumpers.
Bumpers have the advantage of holding down the noise when the stop falls back into position.
A noisy stop can cause cattle to balk. Inserting pipes through the sides to the working chute to prevent animals from backing up can be hazardous to workers. If backstops are not installed and pipes must be used, be sure the pipe is between the cattle and worker. If not, a worker can be caught between the pipe and the chute or fence if the person is not properly positioned and the animal backs up before the pipe is extended through the chute. Also, avoid standing on the fence or rails or extending arms and hands between or over fencing.