Toto Ultimate 1.6 GPF Drain Valve Assembly Compatible with 853/854 Series Toilets - THU831-A
by TOTO
HardwarePlumbingPlumbing Fixture Hardware & Parts
| Manufacturer part number | THU831-A |
|---|---|
| Plumbing Deals SKU | TOTTHU831-A |
| UPC / GTIN | 739268453142 |
| Availability | In stock at Plumbing Deals, as of 18 Oct 2026 |
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Description
From Plumbing Deals' product listing.
Upgrade your TOTO one-piece wastewater system with the Genuine TOTO THU831-A Drain Valve Assembly. Engineered to replace older models (e.g., THU460.15E-A), this high-efficiency valve delivers smooth, reliable flushing at 1.6 gallons per flush. Designed specifically for TOTO 853/854 series toilets—including CST853, CST854, MS853113, MS854114—this valve ensures optimal performance and water efficiency. Crafted from durable materials and precision-engineered by TOTO, it's the trusted solution for maintenance, repair, or new installations. Genuine TOTO OEM Part – Guaranteed fit for 853/854 one-piece toilet systems 1.6?GPF Efficient Flush – Meets EPA Tier?3 and WaterSense standards; updated replacement for THU460.15E-A Reliable & Durable – Precision-engineered and rigorously tested for long-lasting, clog-resistant operation Wide Model Compatibility – Works with Ultimate, Bristol, Plymouth, Willingham, MS853113, MS854114, 853/854 series Easy to Install – Direct swap-in with no toilet disassembly required—perfect for seamless repair jobs or upgrades