Thermostatic shower with concealed temperature valve

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Chris Leckie

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I hope someone can offer me some advice.

Currently in our bathroom we have an Ideal Trevi Moonshadow shower (
https://www.showerdoc.com/ideal-tre...shower-kit-l7064aa/question/new-shower-204916)

Now the shower in question controls the flow of water but has a separate concealed temperature control valve which I've included images of.

Problem we have is the the flow controls on the shower are seizing (
https://www.showerdoc.com/trevi-t-valve-complete-for-l7064aa-e960738aa#frequently_asked_questions) and there's no way to replace the individual part anymore. Ideal Standard have a new shower which looks the same (
https://www.ideal-standard.co.uk/product-details/dual-rainshower-m1/A5689.html) but it expects the flow controls to be concealed alongside the temperature.

Question is, can I buy a shower that matches what I had previously or am I looking at a situation where I have to install a concealed flow/temperature valve and a new shower? That would be a nightmare as I'd have to find one that matches the existing hole.

Any advice is more than welcome.

Thanks very much!
 

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Thanks folks.

Just incase someone else comes across this thread with a similar problem. Ideal Standard confirmed that they don't make a comparable shower anymore but that they stock the part above and replacement handles.

That said, I decided to see if I'd have any luck in just taking it apart. When I did it was quickly apparent limescale build up was the problem. I bathed the parts in remover, cleaned with a tooth brush, then used some copper grease when putting it all back together. Bit of a faff but happy to say everything is working as expected.
 
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Hi, i have the same problem as Chris. We have 2 of these Trevi showers with vertical T bar in our house. They are seizing up big time. Is it straight forward to take them apart? If we are going to take them apart, should we replace the inline valves while we are at it?
Do these inline valves that are recommended on various websites actually fit the T bar? https://www.showerdoc.com/ideal-standard-inline-valve-19mm-assy-e960566nu
 
Hey Philip,

it was honestly really easy. I would say you shouldn’t actually have to replace any of the parts either. Just buy some strong limescale remover from Homebase etc.

All I did was turn of the mains water and unscrew it all. Didn’t take long at all.
 
Hi there, I have same issue. I have followed your advice as far as I can, stripping down shower and cleaning but have not been able to completely breakdown the flow control parts, is there a trick to this (using 2 clamped tools to pull apart)?
 
Thanks for your reply Chris. Please see attached image. So I first I would try and clear limescale without taking the fixture off the wall, and avoid having to turn mains water off and drain system. I can do this tmw but first wanted to check whether this piece broke down any further than this please (do the actual turning flow control parts come off for instance).
 

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Grand. So you’re talking about taking that part off the wall? If so just pull the cover at the wall forward and it’ll reveal a brass fitting. I used a large adjustable wrench to remove it. The top and bottom flippers should also just pull up/down and off. The limescale may be given resistance.
 
Though if memory serves me you might be able to just twist it counter clockwise.
 
Yep, we have a Trevi moon shadow shower with the twin outlets. Had it a good few years now - it’s like Triggers broom! I’ve replaced the hot and cold flow valves twice, the clutch kit three times, the flow handle, the main shower head, the flexi hose hose and the hand shower head. My twin outlet control is always seizing up too and every year or so I have to remove, strip and lubricate it. Poor design.
 
Last edited:
Trigger’s broom: great gag!
What have you used to lubricate the cleaned parts please (I may as well do it properly)?
 
Dylan99 said:
Trigger’s broom: great gag!
What have you used to lubricate the cleaned parts please (I may as well do it properly)?
Click to expand...
I've tried all sorts over the years - silicon lube, Vaseline and even olive oil! Best thing I’ve found is.......nothing. They are just nylon bushes so I put them back dry. It definitely pays to turn them every time you’re in the shower, just once, to keep them free but we rarely use the hand held shower head so after a while you stop doing it and before you know it, it’s siezed again.
 
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