Fluidmaster Adjustable Fill Valve works on the principle of utilizing fluid energy for shut-off, rather than relying on the limited energy of floatation. This innovative adjustable anti-siphon FLC valve less shut-off noise, a shorter fill-up time, positive shut-off, and the elimination of water waste and drip. The entire fill valve is constructed from noncorrosive plastic and metal materials, ensuring durability and long-lasting performance. Designed to be adjustable from 9-1/2" to 14" high, it fits most toilet tanks with ease. This valve meets code approvals from CSA (Canadian Standards Association), UPC (Uniform Plumbing Code), and ASSE (American Society of Safety Engineers), making it a reliable choice for your plumbing needs.