Universal Toilet Fill Valve is compatible with TOTO vintage supply valves and is suitable for various models, such as SW734B, 874, 768, 708, 719RB, and CW744, ensuring a perfect fit. Fill valve precisely controls the water level by adjusting the height of the float, providing efficient water saving and preventing overflow. The built-in high-efficiency filter effectively blocks impurities in the water, ensuring clean water quality and extending the lifespan of the toilet. Made of high-quality ABS material, it offers excellent moisture resistance and durability, reducing the need for frequent maintenance. The standard interface is G3/4 (0.93 inches), which can be easily adjusted to G1/2 (0.8 inches) using an adapter, accommodating various installation requirements for supply pipes. When installing, please ensure that all connections are secure and properly aligned to achieve optimal performance. Compatibility: Compatible with TOTO Old-Style Supply Valve and Suitable for Various Models, Including SW734B, 874, 768, 708, 719RB, and CW744, Ensuring a Perfect Fit with Your Toilet and Optimizing Performance & Functionality. Function: Toilet tank fill valve controls the water level by adjusting the height of the float, providing efficient water saving and preventing overflow, built-in high-efficiency filter effectively blocks impurities in the water, ensuring clean water quality and extending the lifespan of the toilet, external embedded design makes it easy to disassemble and clean. Material: Adjustable toilet fill valve is made of ABS material, offering excellent durability, reducing the need for frequent maintenance and replacement, and ensuring the toilet system is long-lasting Adapter Conversion:WC Water Inlet Valve has a standard interface of G3/4 (0.93 inch). By using an adapter, it can be adjusted to fit G1/2 (0.8 inch) to accommodate different specifications of inlet pipes. Installation: When installing the Water Saving Fill Valve, check that all connecting parts are clean and undamaged. Ensure all connections are securely tightened. Pay attention to the installation direction and position of the fill valve, making sure it aligns properly with the drainage pipe.