This Zurn AquaVantage repair kit is designed for the maintenance of 1.6 GPF diaphragm-type water closet flush valves Its clog-resistant triple-filter diaphragm is made from chemical-resistant GO BLUE material which lasts up to ten times longer than standard rubber components The kit fits Zurn AquaVantage valves and is universally interchangeable with comparable models from other manufacturers like Sloan part A-1041-A This cost-effective repair solution extends valve lifespan reduces maintenance frequency and promotes water conservation.