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SOLENOID UNIT & DIAPHRAGM ASSY
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- solenoid diaphragm assy
- Parts and Accessories Type:
- Solenoid
- Department:
- Plumbing
TOTO THP3190R – Frequently Asked Questions
1) What is TOTO THP3190R and what part of the flush valve does it go on?
THP3190R is a TOTO valve cap top O-ring, sold 10 to a bag. It is a service part for TOTO flushometer solenoid and diaphragm assemblies, sealing the cap at the top of the valve body. If you are rebuilding a sensor flush valve and the cap is weeping after reassembly, this is the seal that gets replaced.
2) Is the THP3190R the whole solenoid rebuild kit or just a seal?
Just the seal. The THP3190R is the cap top O-ring only, not the solenoid unit, not the diaphragm, and not a complete rebuild kit. If the valve is short cycling, failing to close, or not responding to the sensor, the O-ring is unlikely to be the fix on its own and you will need the solenoid or diaphragm assembly itself. Order this one when the fault is a leak at the cap joint.
3) I have a TOTO sensor flushometer leaking from the top of the valve cap. Is this the right part?
A drip or weep at the joint where the cap meets the valve body is the classic symptom of a failed cap top O-ring, which is exactly what the THP3190R replaces. Shut off the control stop, back the cap off, pull the old ring, seat the new one clean and dry of grit, and retorque the cap. If water is instead running continuously into the bowl, look at the diaphragm rather than this seal.
4) Does the TOTO THP3190R O-ring come as a single piece or in a multi-pack?
It ships as a bag of 10 O-rings under the single part number THP3190R. That works in your favor for MRO stock in a hotel, school, or stadium restroom bank, where the same cap seal gets replaced across many valves. There is one orderable configuration, so you are not choosing a size or finish.
5) How do I order the correct TOTO valve cap O-ring by part number?
Specify TOTO THP3190R. TOTO service parts carry a THP prefix and are matched to specific flushometer families, so the part number is the thing to quote, not a measured ring diameter. Give your TOTO valve model to your supplier alongside it if you are servicing a mixed fleet of fixtures.
How fast can I get the TOTO THP3190R 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 THP3190R come with a warranty?
Absolutely. The TOTO THP3190R 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 THP3190R?
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 THP3190R 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.