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TOTO WASHLET Connection Adapter Kit for In-Wall Tank System
Model: TOTO-WASHLETADAPTER
TOTO WASHLET Connection Adapter Kit for In-Wall Tank SystemsThis connection adapter kit provides the water supply interface required when installing a TOTO WASHLET on an in-wall tank toilet system...
TOTO
Starting at
$66.11
This WASHLET adapter and thread extender is designed for use with select TOTO toilet models that require fill valve extension. This adapter has a 7/8 inch fill valve connection to extend the threads when access to the fill valve is limited. Connect the female end of the adapter to your fill valve and the male end to the WASHLET junction tee. Includes rubber gasket with screen filter.
- Fill valve extender for select TOTO toilets
- Extends the fill valve threads to connect the WASHLET tee
- 7/8 inch fill valve connection
- Includes rubber gasket with screen filter
- Constructed of durable engineering thermoplastic
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- Parts
- Collection:
- Washlet
- Product Material:
- Plastic
- Department:
- Plumbing
- Parts and Accessories Type:
- Fill Valve
- Application:
- Toilet
TOTO 9AU321-A – Frequently Asked Questions
1) What does the TOTO 9AU321-A adapter actually do on a WASHLET install?
The 9AU321-A is a fill valve extender for select TOTO toilets. When the fill valve shank sits too deep or too tight to get the WASHLET junction tee onto it, this piece adds thread length so the tee has something to land on. Female end goes onto the fill valve, male end takes the WASHLET tee. A rubber gasket with screen filter is in the package.
2) What size connection does the TOTO WASHLET fill valve adapter use?
7/8 inch fill valve connection on the extender, which is the standard toilet fill valve shank thread. If the fill valve on your bowl takes a 7/8 inch coupling nut, this threads on.
3) Do I need the 9AU321-A extender for every WASHLET installation?
No. It's only needed on select TOTO toilets where access to the fill valve is limited and the exposed thread is too short to accept the WASHLET junction tee. On a normal tank where the tee threads on directly, skip it. Check the fill valve shank before ordering an extender you don't need.
4) Is the TOTO 9AU321-A metal or plastic, and will it hold up in a rental or commercial washroom?
It's engineering thermoplastic, not brass. That's the same material family TOTO uses for the fill valve shank it threads onto, so there's no dissimilar-metal issue at the joint. Hand-tighten it like any supply connection; a wrench on a plastic coupling is how these crack.
5) Do I have to order a separate gasket or filter with the TOTO 9AU321-A?
No extra parts to add. The rubber gasket with screen filter ships in the box, so you have the seal for the joint and the screen that keeps grit out of the WASHLET's water path. You'll still need the WASHLET junction tee itself and a supply line, which come with the WASHLET unit.
6) What is the TOTO part number for the WASHLET fill valve thread extender?
TOTO 9AU321-A, part of the WASHLET accessory line. That's the number to give a wholesaler or put on a purchase order when you're standardizing WASHLET retrofits across a building.
7) Does the 9AU321-A come in different sizes or finishes?
One configuration only, 9AU321-A, with the single 7/8 inch fill valve connection. There's no long or short version and no finish choice, so ordering is a single line item per toilet you're adapting.
How fast can I get the TOTO 9AU321-A delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the TOTO 9AU321-A come with a warranty?
Absolutely. The TOTO 9AU321-A is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the TOTO 9AU321-A?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
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