1. Automatic Retraction: When the supply of compressed air to the cylinder is stopped or vented, the spring exerts force to return the piston to its original position.

2. Ensures Consistency: It maintains the piston in the retracted position when the cylinder is not in use or pressurized.

3. Single-Acting Mechanism: It allows the cylinder to function as a single-acting system, which means air is supplied only for the extension stroke, and the spring handles the retraction.