Dudley Turbo 88 9 inch 2 part Dual Flush Syphon WC Cistern DIY Toilet repair Unique 2-part design for simple servicing 6/7/9 litre convertible Water-saving full and reduced flushing capabilities in low level installation WRAS approved 38mm (1.5") diameter outlet Dudley spares packs readily available DuoFlush When the lever is depressed and released, the Turbo 88 delivers a full flush that is as reliable as ever. However, when the lever is depressed and held down, the Duoflush facility is activated delivering a reduced flush