The TOTO USA THU775S-A Drain Valve is designed specifically for dual flush toilets, ensuring efficient water management. This valve features a durable construction that meets high standards for performance and reliability. With a compact design, it fits seamlessly into various toilet models, providing a reliable flush mechanism. The valve is compatible with TOTO's dual flush systems, allowing for a choice between 1.6 GPF and 0.9 GPF, promoting water conservation. Installation is straightforward, making it an ideal choice for both DIY enthusiasts and professional plumbers.