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FILL VALVE - IN WALL TANK
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- fill valve in
- Parts and Accessories Type:
- Fill Valve
- Department:
- Plumbing
- Application:
- Toilet
TOTO TSU46A – Frequently Asked Questions
1) What is the TOTO TSU46A?
The TSU46A is the fill valve for TOTO in-wall tank systems, sold as a replacement part rather than a complete tank. If the tank behind your wall is not refilling after a flush, or is running continuously, the fill valve is the part that meters water back into the tank and shuts off at level. Order it by TOTO part number TSU46A.
2) Is the TOTO TSU46A a complete tank or just the valve?
Just the valve. The TSU46A is the fill valve alone, a service part for a TOTO in-wall tank that is already installed. It does not include the tank, the carrier, or the flush valve. If the problem is the flush side (water leaking past into the bowl) rather than the fill side (tank not refilling or never shutting off), a fill valve won't fix it.
3) Do I have to open the wall to replace a TOTO in-wall tank fill valve?
No wall demolition. TOTO in-wall tanks are serviced through the access panel behind the flush plate, and the fill valve is reached that way. Pull the flush plate, shut the supply stop, and the valve comes out through the opening. That is the whole point of the in-wall design for a property manager or maintenance tech, the serviceable parts stay reachable from the room side.
4) Which TOTO fill valve do I order for an in-wall tank, TSU46A or a standard tank fill valve?
For a concealed in-wall tank, the TSU46A is the in-wall unit. Standard TOTO fill valves are built for an exposed china tank sitting on the bowl and use a different body and mounting, so they are not an in-wall substitute. Match by TOTO part number, not by appearance.
5) Does the TOTO TSU46A come in different finishes or sizes?
One configuration only. The TSU46A ships as a single part number with no finish or size choice, which is normal for a concealed component, nothing about it is visible once the flush plate is back on. Finish selection on an in-wall system happens at the flush plate, not here.
How fast can I get the TOTO TSU46A 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 TSU46A come with a warranty?
Absolutely. The TOTO TSU46A 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 TSU46A?
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 TSU46A 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.