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DUAL FLUSH VALVE ASSEMBLY
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- dual flush valve
- Parts and Accessories Type:
- Flush Valve
- Department:
- Plumbing
- Application:
- Toilet
TOTO THU429-A – Frequently Asked Questions
1) What is the TOTO THU429-A mounting block kit used for?
The THU429-A is a TOTO repair part for the Aquia toilet, a dual flush valve assembly that mounts inside the tank. It is a toilet part, not a trim or accessory item, so it is what you order when the flush valve in an Aquia tank needs to be replaced rather than the whole tank.
2) Will the TOTO THU429-A fit a non-TOTO toilet or a universal dual flush kit opening?
No. The THU429-A is built for the TOTO Aquia tank and is not a universal flush valve. If you are repairing a different brand of two-piece toilet, you need the flush valve made for that tank; a TOTO Aquia assembly will not seat or seal correctly in it.
3) Is the THU429-A a complete assembly or do I have to buy the flush valve separately?
It ships as an assembly. TOTO sells the THU429-A as the dual flush valve assembly for the Aquia, so the flush valve components come together under the one part number rather than as loose pieces you have to source individually.
4) I manage a building with several TOTO Aquia toilets. Is there one part number I can standardize on for flush valve repairs?
For Aquia tanks, the THU429-A covers the dual flush valve assembly, so it is a single line item you can keep on the shelf across those openings. Match it to the Aquia model in your units first, since TOTO uses model-specific THU part numbers and a valve for another series will not drop into an Aquia tank.
5) How do I make sure I am ordering the right TOTO flush valve part number?
Order by the manufacturer part number, THU429-A. TOTO stamps or labels model information inside the tank lid or on the tank interior, and the repair part must match that model. Ordering a THU number that belongs to another TOTO series is the usual way the wrong valve ends up on a job.
How fast can I get the TOTO THU429-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 THU429-A come with a warranty?
Absolutely. The TOTO THU429-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 THU429-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
Why buy the TOTO THU429-A from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.