Adjustments: Arc and radius should be adjusted while water is running Model Comparison 8’ - 14’ (2.4 to 4.6m) R-VAN14: 45° - 270° Adjustable Arc R-VAN14-360: 360° Full Circle 13’ - 18’ (4.0 to 5.5m) R-VAN18: 45° - 270° Adjustable Arc ...