The Zurn Toilet Dual Flush Valve is a toilet flush valve that offer building owners economical, reliable flushing for bathrooms with the certainty of knowing an immediate re-flush is available if necessary. Zurn flush valves are available as either single or dual flush. The dual flush capable of 6/3L flushing meeting current Australian/New Zealand Standards. It is also available as a single flush in 6L or 9L and is upgradable to 4.5L flushing when regulations permit.