Since innovating the Royal Flushometer more than 100 years ago, Sloan has led the industry in water efficiency with products that are built to perform and guaranteed to last. Every day around the world, Sloan products connect the systems that manage our planets most precious resource. As the worlds leading manufacturer of commercial plumbing systems, weve spent more than a century pioneering smart, water-saving restroom solutions that are built to last a lifetime. Water Closet Flushometer. For water closet flushometer. Unfinished. For user with Sloans Optima Plus flushometer May 2003 to present. 3325450 - Water Closet (This Model).