The T&S Brass B-3972-01 is a reliable waste valve designed for efficient drainage. Featuring a lever handle for easy operation, it fits a 3-1/2" sink opening and includes a 2" drain outlet with an overflow assembly. This model serves as a direct replacement for the B-3927-01, ensuring compatibility and seamless installation. Ideal for both commercial and residential applications, it combines functionality with durability for long-lasting performance.