This question is regarding Ideal Standard Wittlich 3/4"" Thermostatic Cartridge D 08 - S960134nu

Box spanner size to remove Thermostatic Cartridge

Hi, I have a Trevi Therm 300, installed around 1999, which is starting to only provided cooler showers. The hand basin taps are hot enough so its definately the shower and I assume the Thermostatic cartridge. I read one of you previous Q&A's titled "Trevi 300" which suggested first check to see if filters on thermostatic cartridge are blocked, if not replace the cartridge. I stripped down my shower mixer to the Thermostatic cartridge, and it is the newer one with chamfered end, S960134nu, but I don't have correct spanner to remove it. Do you sell suitable box spanners or know what size of spanner is needed eg imperial 1 inch or if metric 23, 24 or 25mm I would guess, probably 24mm. Thanks for your help Thanks PS do you have the S960134nu cartridge in stock.
Asked 4 years ago by David Kennedy, Bristol
The spanner or box key you need is 25mm

We would normally use pump pliers they are never (Normally) that tight.


Answered 4 years ago by George Thomson

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