Universal kit to inject ozone into a PVC piping system. Kit consists of a by-pass system with ball valve and venturi. Executed in 50mm PVC. Venturi has an 8mm air connection. Operation: water is pumped into the main line. By partially closing the ball valve, the water is also forced to go through the venturi pipe above. Because of the constriction in the venturi, air (ozone) is drawn in through...