THU224 Flush Valve/Parts 

This THU224 flush valve assembly is designed as a direct for TOTO Aquia -piece toilets, ensuring seamless compatibility with models including Aquia III, Aquia II, and both old/new-style Aquia toilets. It precisely fits tanks #ST412M, #ST413M, #ST416M, and #ST464M (models CST414M, CST416M, CST464MF, etc.).

THU224 Dual Flush Valve Assembly Features:

• Dual Flush Efficiency: Offers full flush (1.6 GPF) and half flush (0.9 GPF) 
• Material: Constructed with high-ABS plastic and reinforced silicone , extend valve lifespan
• Size: Total height 12 3/8″
• Easy To Install: For THU224 systems, replace the upper valve without tank removal. For THU435 or other models, replace the button after tank disassembly
• Compatibility: May work with non-TOTO toilets if tank height and flush valve measurements match. Always verify dimensions before purchase to avoid installation issues

NOTE:

Incorrect sizing can lead to poor flushing or leaks. We prioritize compatibility accuracy to ensure satisfaction. Measure your tank and specifications carefully!

Valve Compatibility: Fit for TOTO Parts for Piece Toto Aquia New/Old Style/Aquia III/Aquia II . Piece Model #CST414M - Tank #ST413M/ST416M/ST464M models
Dual Flush Valve Size: This valve is only suitable for split-, not suitable for piece ,and the water tank height should be greater than 11.81inch. Total dual max flushing system height :12 3/8″
Thu224 Flush Valve Material: This dual flush valve is made of high-quality ABS material and equipped with premium silicone gaskets, reinforced for durability. Designed with full or half flush options, it saves water, restores flushing performance, and extends the life of the flush valve
Easy Installation: Our flush valve the original THU224. For THU224, no need to remove the tank—just replace the upper part. For other models (.g., THU435), remove the tank and replace the button
This flush valve may work with non-Toto Aquia toilets, but measure tank height & drain opening before purchase to ensure compatibility. Incorrect sizing may cause installation issues or poor flushing. We prioritize satisfaction through accurate compatibility