extending passageway 18 a passageway inlet 20 is located at an upstream end of the ball joint connector 10 and a passageway outlet 22 is located at the opposing downstream end when installed as shown in fig1 and 3 the passageway 18 carries water from the water supply line 12 to a conventional showerhead 24 the ball joint connector 10 apart from the insert 40 is preferably made of a metal such as brass standard internal threads 26 are provided in the passageway inlet 20 and are designed to threadingly engage the water supply line 12 the showerhead 24 can be movably secured to the outlet portion 16 in a known manner so as to be easily swiveled compare the mounting system of u s pat no 6 796 518 the passageway 18 includes a venturi entry section 28 that provides a taper preferably conical to speed up the flow through a venturi throat 30 downstream of the venturi throat 30 the passageway 18 has a venturi exit cone 32 to expand flow outwardly the passageway 18 may further include a pocket section within which a flow regulator and or a filter screen may be placed the passageway 18 may further include a pocket section within which a flow regulator and or filter screen may be placed when water flows through the passageway 18 the reduction provided by the venturi entry cone 28 throat 30 and.