Toto TSU53A Part Fill Valve Assembly. Toto takes pride in providing their customers with quality plumbing products that are durable, dependable and visually pleasing. This line of Genuine Replacement Parts are developed to perform and last the way the they were originally intended too. This Toto TSU53A Part Fill Valve Assembly is a Toto Genuine Replacement Part designed for MS - Eco Lloyd, Ultramax and Carlyle Two-Piece Toilets. This Fill Valve features an adjustable height and flow rate for precise performance. All necessary mounting hardware is included for easy installation.