Watersaver for hand showers. Flow rate is ~ 7 l/min. The PCW-02 flow regulator, a ½” washer with integral flow regulator and flexible silicone turbine, is inserted into shower handles, where it replaces the existing washer. The flexible turbine facilitates use in different bore diameters and ensures secure positioning in any 1/2” connection with a male thread. Mounting: The existing washer is removed and replaced with the PCW-02. Insert the PCW-02 flow regulator into the shower handle with the turbine side facing against the flow and screw it to the hose thread.