Kludi Parts Flexx.Boxx 88011 concealed thermostatic mechanism (2012-2024)
Here you will find the technical parts of a Kludi concealed thermostatic valve (shower or bath) on the Flexx.Boxx concealed part 88011. This concealed part was used from May 2012 to 2024 behind the thermostatic trim sets of, among others, Kludi Zenta, O-Cean, Balance, Objekta and Bozz. From May 2012, the thermostatic element and the stop/diverter are in the trim set; the concealed part itself is an empty sleeve.
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Thermostatic element (74926): until spring 2018 7492600-00, after that 7639000-00. They are interchangeable; the 7639000-00 has an additional handle attachment.
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Stop/diverter (74515), sets ++830++++: until 03/2018 7451537Z-00 (can be unscrewed separately with wrench 930869), after that 7331937-00 with a hexagonal lock nut, for which no special wrench is needed.
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Stop valve, sets ++835++++: until 03/2018 7813837Z-00, after that 7356537-00.
- Central thermostatic valve (sets ++729++++): thermostatic element 7310800-00.
The drawing is of the Kludi Balance trim set 528300575. The mechanism is the same for all series; the handle (73002), the sleeve (920299) and the locking sleeve (930715) differ per series and color and can be found on the parts diagram of your faucet.
Which concealed part do you have?
You can see that from the article number of your trim set (the chrome exterior). Look at the 3rd, 4th and 5th digits, for example 388300545.
| Trim set |
Concealed part |
Thermostatic element |
| ++820++++ / ++825++++ |
Flexx.Boxx 88066 (until April 2012) |
7480900-00 (is in the concealed part) |
| ++830++++ / ++835++++ |
Flexx.Boxx 88011 (May 2012 - 2024) |
7492600-00, from 2018 7639000-00 |
| ++810++++ / ++885++++ |
Slim.Boxx 88022 (from May 2024) |
7639000-00 |
| ++729++++ / ++739++++ (central thermostatic valve) |
88011 / 88022 |
7310800-00 |
With the buttons at the top you switch between the versions.
Replacing the thermostatic element
- Turn off the main valve and cover the drain, so that no small parts disappear.
- Open the volume handle (open/close); no water should come out now.
- Pry off the cover of the temperature handle with a small screwdriver, loosen the screw underneath and remove the handle.
- Slide off the locking sleeve and loosen the chrome sleeve.
- Unscrew the large brass spindle completely and remove the thermostatic element.
- Place the new (or descaled) thermostatic element and tighten it.
- Slide the locking sleeve back with the marking at the top, close the volume handle and open the main valve again.
- From the factory, the element is set to approximately 38 °C. Do you want a different lock temperature? Let the water run and turn the spindle until you have the desired temperature. Then mount the temperature handle with the locking button facing up and click the cover back on.
Tip: open and close the handles completely every now and then; that keeps the moving parts smooth. Remove limescale with a citric acid-based agent and then rinse thoroughly, never with abrasive cleaners.
Not sure which part you need? Send us a photo, we will find it for you!
