Repair of flush valve or toilet components, rather than replacement of the entire unit, saves money and resources. Designed with our EcoFlush™ technology for an ultra-quiet flush, the 1.6 gpf valve cartridge (Part no. Z8106-03) is made with long-lasting chloramine-resistant internal components. When you need a replacement part for repair or maintenance of a flush valve, trust Zurn for genuine, reliable parts.