The T&S B-3990 modular waste drain valve is a trusted choice for commercial kitchens, designed to deliver efficient drainage control without compromising performance. Its pull handle makes operation effortless, even in the busiest environments, while the 2-inch NPT female x 1/2-inch NPT male adapter ensures a secure, leak-free installation. Ideal for 3.5" sink openings, this valve is built to withstand the demands of high-volume restaurants, ensuring smooth water flow and effective waste management. With a limited lifetime warranty against defects in material and workmanship, the B-3990 is a reliable investment that reduces maintenance downtime and keeps your kitchen running smoothly. If you're looking for a durable, high-performance waste drain valve that meets the rigorous standards of commercial kitchens, the T&S B-3990 is the perfect solution.