means to bias the position of the pin within the body aperture when the tap handle assembly is assembled with the tap body the pin is biased to the tap body to substantially prevent the movement of the spindle and to restrict the flow from the tap application_number US 201113811304 A description with reference to fig1 there is shown a biased locking pin 10 for a tap handle assembly for a flick mixer tap the locking pin 10 has a knob 11 a stem portion 15 an outwardly extending flange 16 and an end portion 17 the knob 11 has a threaded recess 14 and is connected to the stem portion 15 by screw attachment to a threaded end 13 a helical spring 18 is mounted on the stem portion 15 between the outwardly extending flange 16 and the knob 11 a threaded retaining ring 12 is mounted on the stem portion 15 between the helical spring 18 and the knob 11 the stem portion 15 outwardly extending flange 17 and helical spring 18 are retained in a wide aperture section 21 in a tap handle body 19 by the threaded retaining ring 12 to a threaded periphery 24 of a body aperture 20 the wide aperture section 21 is adjacent a narrow aperture section 22 the pin end 17 protrudes through the aperture 20 where it engages to prevent movement of the tap handle body 19 and a spindle portion not shown and stop the flow of water the pin end 17 of the locking pin 10.