What is the minimum clearance from the centerline of an upright to a hanger?

The minimum clearance from the centerline of an upright sprinkler to a hanger is three inches. This requirement is crucial for ensuring that the sprinkler can operate effectively without any obstruction. Adequate clearance is necessary to allow for the proper spray pattern and distribution of water in case of activation. Additionally, the space prevents potential physical damage to the sprinkler system. Adhering to this three-inch clearance standard promotes optimal performance and compliance with fire protection codes and standards. This ensures that the system can function correctly during a fire emergency, providing essential coverage for the area being protected.