The branch angle is editable within the range, and a message appears in the message center about the range of angle on incorrect values. You can set Max and Min ranges for Pipe Wye and Lateral Tee with the following variables.

The lower limit of the Lateral Tee angle property value is 30 degrees. You can change its minimum angle value by defining the configuration variable OPM_MIN_ANGLE_FOR_LATERAL_TEES.

The Upper limit of the Lateral Tee angle property value is 150 degrees. You can change its maximum angle value by defining the configuration variable OPM_MAX_ANGLE_FOR_LATERAL_TEES.

The lower limit of the Reducing Wye angle property value is 30 degrees. You can change its minimum angle value by defining the configuration variable OPM_MIN_ANGLE_FOR_WYES.

The Upper limit of the Reducing Wye angle property value is 75 degrees. You can change its maximum angle value by defining the configuration variable OPM_MAX_ANGLE_FOR_WYES.