The T&S Brass B-3952-01 is a reliable drain valve designed for efficient waste management. Featuring a twist handle for easy operation, this waste valve fits a 3-1/2" sink opening and includes a 2" drain outlet with an integrated overflow assembly. It serves as a direct replacement for the B-3917-01 model, ensuring compatibility and seamless installation. Ideal for both commercial and residential applications, this durable drain valve enhances functionality while maintaining a sleek appearance.