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Shower woes

Community Veteran
Posts: 2,213
Thanks: 95
Fixes: 4
Registered: 18-02-2013

Shower woes

We have a Trevi therm 300 pre98 built in shower mixer which seems to weeping water from item19 on this page http://www.showerdoc.com/trevi-therm-pre-1998 I think the term is thermostatic control cartridge. Can these be repaired? Or even better still if anybody is familiar with this type of valve what other part may be compatible with this old dinosour. Having brass fittings throughout was a great idea 20 years ago....  Undecided
4 REPLIES
gtowen
Rising Star
Posts: 353
Thanks: 9
Fixes: 1
Registered: 05-05-2013

Re: Shower woes

Looking at the diagram I would say item 20 is a set of seals for item 19. If you can source / buy the seals it shouldn't be too difficult to dismantle the mixer and replace those seals. Smiley
Community Veteran
Posts: 2,213
Thanks: 95
Fixes: 4
Registered: 18-02-2013

Re: Shower woes

I've ordered those seals at first glance yesterday, but i'm not convinced that will help the leak coming out the front on the valve. I'm guessing those filters and seals are 2 seperation seals plus main mounting seal. You can see the front view on this link http://www.showerdoc.com/trevi-therm-cartridge-pre-1998-a963068nu
I even looked at pulling the following apart and putting my old nobs/facia back on as this model appears near as dammit the same as the old trevi therm 310 external, ie the same pattern as my 300.. http://www.ebay.co.uk/itm/Trevi-Therm-Exposed-Thermostatic-Shower-Valve-A2158AA-/261458344484 but looking closer the parts although look workable... i'm not convinced.
Or even this one http://www.ebay.co.uk/itm/Ideal-Standard-Trevi-Therm-300WH-WHITE-Box-a-bit-scruffy-but-New-unused-pr...
gtowen
Rising Star
Posts: 353
Thanks: 9
Fixes: 1
Registered: 05-05-2013

Re: Shower woes

At the price of £249 for a replacement, my first instinct is to replace the seals first. When you dismantle the valve to replace the seals you can inspect the parts for wear / damage and then make a more informed decision on whether to buy a replacement or not.
As to your last link, I'm not saying it is not genuine, but I'm always suspicious of something described as such :
        "Ideal Standard Trevi Therm 300WH WHITE Box a bit scruffy but New unused product"
You could quite easily be bidding on exactly what it says........... a White box thats a bit scruffy Sad
Community Veteran
Posts: 2,213
Thanks: 95
Fixes: 4
Registered: 18-02-2013

Re: Shower woes

Well, to replace hot/cold flow valves plus the thermostatic valve, I won't see much change from £200 so yeah i'll 100% try the seal kit first.
I don't see any point in just replacing the stat and leaving the flow valves if i do need to take that route.