At Delany, we never rest on our past achievements like our first Flush Valve, the Flushboy, patented in 1927 or the other patented products like Rubber Sleeve Vacuum Breaker, introduced in 1945, or the Rubberflex Handle and Regulating Screw brought out in the 1950’s. As the industry entered the electronic age in late 80’s, it was Delany that first patented the top mounted, battery powered, sensor activated Flush Valve, the Impulse in 1988.