This dual flush cistern valve is designed by Geberit. This product is for installation inside ceramic cisterns. This mechanism features 2 x Half Moon push Buttons for function (chrome). Product Details Overflow pipe height-adjustable Adjustable flush volume depending on amount of water in cistern Dual flush actuator with threaded rod for fastening the cistern cover Dual flush unit Lid attachment Dual flush actuator Fastening material Seals Technical Information Actuation force - 18 N Temperature max. during storage - 40 C Operating temperature water max - 25 ?C Flush volume large range 6 / 9 litre Flush volume small range 3 - 4 litre