TOTO - Fill Valve Extension and Adaptor for WASHLET Tee Connection - -  - Premium Bidet : Smart Toilets & Bathroom Amenities
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TOTO - Fill Valve Extension and Adaptor for WASHLET Tee Connection

$13.00

Key Features

• Fill Valve Extender — extends fill valve threads for select TOTO® toilets
• 7/8-inch fill valve connection — provides a secure, precise fit for easy installation
• Rubber gasket with screen filter — prevents leaks and blocks debris
• Compatible with WASHLET® Tee Connection — enables smooth WASHLET® setup
• Durable thermoplastic construction — engineered for strength and longevity
• Simple, tool-friendly installation for retrofit or upgrade projects
• Designed to ensure watertight, reliable performance over time
Out of stock
Technical/Usage Details
The TOTO® Fill Valve Extension and Adaptor (model 9AU321-A) enables quick connection between a toilet’s fill valve and the WASHLET® Tee. It is especially useful when access to the fill valve is limited or when additional thread length is required.

Constructed from high-grade engineering thermoplastic, this adaptor resists corrosion and everyday wear. The 7/8-inch fill valve connection ensures a secure fit, while the integrated rubber gasket and screen filter provide leak-free performance and prevent debris from entering the water line.

📄 Visit TOTO USA for installation resources
Benefits
• Simplifies WASHLET® installation for hard-to-reach fill valves
• Reduces risk of leaks with included rubber gasket and filter
• Provides long-lasting durability for continuous use
• Compatible with multiple TOTO® toilet models
• Ensures secure, watertight connection without additional adapters
• Saves time and prevents installation frustration
Specifications
SpecificationValue
BrandTOTO
Model9AU321-A
Product TypeFill Valve Extension and Adaptor
MaterialEngineering Thermoplastic
Connection Size7/8-inch fill valve fitting
CompatibilitySelect TOTO® toilets; designed for WASHLET® Tee Connection
Included ComponentsAdaptor body, rubber gasket with screen filter
InstallationTool-friendly, quick retrofit design
Warnings & Safety
• Shut off the water supply before installation.
• Ensure gasket and screen filter are properly seated to avoid leaks.
• Do not overtighten plastic fittings to prevent damage to threads.
• Use only with compatible TOTO® toilets and WASHLET® Tee Connections.
• Check connections periodically for secure fit and proper sealing.

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Authorized Dealer

Genuine inventory with full U.S. manufacturer warranty.

Buying from an authorized dealer protects your warranty and ensures authentic parts, manuals, and service pathways.

  • Direct support from the brand if ever needed
  • Eligible for recalls, service bulletins & updates
  • Verified supply chain (no gray-market inventory)

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Fast Delivery

Tracked shipping in 5–8 business days across the U.S.

Orders ship quickly with full tracking and delivery updates. Expedited options may be available at checkout.

  • Dispatch within 1–2 business days (typical)
  • Insured carriers for peace of mind
  • Text & email status notifications

Shipping & returns policy

Best Price Guarantee

We match or beat authorized online prices.

If you find a lower price from an authorized retailer on the same item, we’ll match it—before or after you purchase.

  • Same model, condition, and warranty
  • Price match requests handled in hours
  • Clear documentation keeps it simple

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Dedicated Support

Real people via phone, chat & email — 7 days a week.

From presale questions to setup tips, our team is here to help—without scripts or long waits.

  • Concierge-style recommendations
  • Setup guides & troubleshooting
  • Follow-ups until you’re fully set

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