Aqua Dance. To Change Angle Swivel Shower Head around ball joint fo sat desired angle (Fig. 4). Extra-Low Water Pressure? You can remove Water Flow Regulator. As mandated by U.S. federal law, this shower heed is equipped with water flow regulator that 0 limits medium water flow to 2.5 gallons {9.5 liters) per minute at 80 psi water pressure.