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FLUSH VALVE ASSEMBLY RH TL
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- flush valve rh
- Parts and Accessories Type:
- Flush Valve
- Department:
- Plumbing
- Application:
- Toilet
TOTO THU838-A – Frequently Asked Questions
1) What is TOTO THU838-A?
THU838-A is a TOTO toilet flush valve assembly, the right-hand trip lever version. It is the internal valve that seats in the tank and releases water to the bowl when the lever is operated, sold as a replacement service part rather than as a complete tank kit.
2) Is the THU838-A flush valve for a left-hand or right-hand trip lever tank?
Right hand. The THU838-A is the RH trip lever flush valve assembly, so it matches a tank where the handle sits on the right side as you face the toilet. If the tank you are servicing has the lever on the left, this is not the part to order.
3) How do I know the TOTO THU838-A is the correct replacement flush valve for my toilet?
TOTO service parts are matched to specific tank models rather than being universal, so the safe check is the model number stamped inside the tank or on the tank lid underside. Order THU838-A when TOTO calls out that number for your tank and the trip lever is on the right side. Buying by tank model, not by appearance, is what keeps the flapper seat, overflow height and lever linkage all lining up.
4) Does the THU838-A include the fill valve and trip lever too, or just the flush valve?
Just the flush valve assembly. THU838-A covers the flush valve side of the tank only, so a fill valve, trip lever or tank-to-bowl gasket and bolts are separate parts if your repair also needs them. Plan a full tank rebuild as multiple line items.
5) Can a property maintenance tech swap a TOTO flush valve assembly without pulling the toilet?
Yes, on a two piece tank the flush valve is reachable by shutting the supply, draining the tank and lifting the tank off the bowl to reach the valve nut. The toilet itself stays set on the floor. The THU838-A is a toilet service part meant for that kind of in-place tank repair.
How fast can I get the TOTO THU838-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 THU838-A come with a warranty?
Absolutely. The TOTO THU838-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 THU838-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 THU838-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.