Advice on Stiff Shower Handle

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KC_TX

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This shower/tub handle (pics included) in my sister's apartment looks like it was originally a "Mixet" that someone in the past (close to 20 years ago) modified with a No-Mix valve. The sticker on the wall plate is a big clue, along with the overall look of it.

The handle is currently extremely stiff and difficult to move, especially pulling to turn on & pushing to turn off....you kind of have to turn & pull to get the water going. The temperature adjustment & water pressure seem fine once it's turned on and it doesn't seem to be leaking.

We were planning to replace with this "No-Mix Model 100" part (https://nomix.com/products/model-100) but thought we should make sure before ordering.

Since the water has to be turned off for 4 apartments when doing this, we figured it's better to replace it altogether vs. just the O rings, if that makes sense.

Do you think the "No-Mix Model 100" is the correct part to fix this problem or is there something else you think could be the issue?
 

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Tuttles Revenge

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I don't have any direct experience servicing Mixet valves, but they're likely similar to replacing a moen. Depending on how hard the water is they can get very stuck and that may be why its stiff. I would look up the instructions on how to remove a stubborn moen cartridge to be prepared on this one too.

I would be armed with a couple different mixet cartridges since 4 units will be affected. From reading the description of the NoMix cartridge I think its designed to repair a valve body that has corrosion issues.. So I would imagine it would fit into a valve that has no corrosion too. Just more sealing points.

https://terrylove.com/forums/index.php?threads/moen-shower-cartridge-removal-tool.1437/
 

Mr tee

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No -Mix was not made by Mixit it is a replacement designed to overcome problems that can happen and can't be fixed with a Mixit cartridge. I am not sure if the No-Mix is still made.
 

Jeff H Young

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I've replaced Mixit cartridges and had mixed (no pun intended ) results on 30 40 year old . Actually haven't got them figured out totally the no mix might be a good fix! the seat is non replaceable from what I observed . I've also noticed that they make at least 2 different lengths of cartridge and generally I don't like working on them. I'll take an old Moen any day
On second look that is definitely not a standard Mixet a Mixet has a handle that turns and a lever for temp .
 

Jeff H Young

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yep. good luck If you have one of those no mix cartridge ill bet you'll get it done in short order
 
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