Green Building Forum - Shower Thu, 27 Aug 2026 00:03:38 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Shower https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311136#Comment_311136 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311136#Comment_311136 Wed, 29 Jul 2026 13:53:50 +0100 Rex
Me again!!!

I frequently feel that design somehow does not improve the function, and this is exactly the case.

As in the two photos below, I have one of these bath tap shower fittings. In the lower photo, push the right thing and it switches from bath filling to shower. But!!!!

Frequently, either this does not happen or if it does, the design malfunctions and upon turning the water off, it will not revert to bath or most frequently, supplies both shower and bath at the same time.

The left spring sits in a recess in the body of the tap, so should all be locked in place. Disassembly usually shows one of two things: 1/ The spring has somehow, become dislodged or 2/ one of the O rings has been forced by water pressure from its seat. The water is running at 3 bar because that is the recommended pressure for the softener.

How to resolve the all to frequent dismantling beats me. It happens pretty much every couple of months. I have investigated replacing the tap unit, but want the same, which of course is either no longer available or is surplus stock for around a very profitable £250.

Having dismantled, reset whatever is unset, reassembled, it will work as it should for a few months, then the cycle repeats itself.

Grateful for any insight into how to ensure the push button works every time as it should.

Thanks and toodle pip]]> Shower https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311139#Comment_311139 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311139#Comment_311139 Wed, 29 Jul 2026 15:40:26 +0100 Peter_in_Hungary
Are you replacing the O rings with exactly the same size as the original? A small amount undersize would mean early failure and there are differences between imperial and metric sizes which look close to identical except that they are just enough difference to cause trouble. And I have also found in some things that Chinese metric is not the same as European metric.

At the end of the day give up the unequal struggle and buy something new with a 2 year guarantee that SWMBO likes.]]> Shower https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311142#Comment_311142 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311142#Comment_311142 Wed, 29 Jul 2026 17:57:44 +0100 djh Posted By: RexI have investigated replacing the tap unit, but want the same, which of course is either no longer available or is surplus stock for around a very profitable £250.
Posted By: Peter_in_HungaryAt the end of the day give up the unequal struggle and buy something new with a 2 year guarantee that SWMBO likes.
I just paid £250 for a new tap (Franke) for our kitchen sink, so it doesn't sound totally unreasonable if you really do want the same. But I agree with PiH that just buying something else is probably a better course. Personally, it looks an ugly tap to me :bigsmile: :cry:]]> Shower https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311144#Comment_311144 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311144#Comment_311144 Thu, 30 Jul 2026 05:16:23 +0100 tony
Clean or replace the shower head too]]> Shower https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311146#Comment_311146 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311146#Comment_311146 Thu, 30 Jul 2026 10:55:32 +0100 Rex
I have replaced the seals, measuring with a Vernier so should be OK. Once cleaned and lubed, it all works for a few months, and then, bingo, another failure.

As suggested, a poor design so discontinued.]]> Shower https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311154#Comment_311154 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18461&Focus=311154#Comment_311154 Fri, 31 Jul 2026 22:18:38 +0100 WillInAberdeen
It will be something like this,

https://www.divapor.com/spares/baths-hot-tubs/bath-shower-mixer-diverter-valves/ideal-standard-b9688aa-diverter-assembly-ceraplan-b960522aa.php

you'd need to google a few "shower diverter valve" suppliers then contact them with your tap details and they should be able to look up the correct valve that was originally used in your tap



(Personally I will never go back to those tap/shower diverter things, as thermostatic shower mixer valves are safer, better, comfier and not expensive! They avoid the design problem of having a 2-way diverter valve that must have sliding seals, instead of a positive 1-way shutoff seal against a washer or ceramic cartridge. You could plug the hole in the tap where the diverter valve is, and fit a standalone shower mixer further up the wall? )]]>