Pressure Relief Valve for Triton 6Pcs, Mellbree PRD Disc Seals Cover Valve Shower Spares Parts Compatible with Triton Electric Showers

Did the trick. Top tip - remember where you put the ones you don't use so that you don't end up buying more should you need another.

Does the job save getting a new item

Good buy, reasonably cheap and arrived on time.Don't know why so much cardboard packaging was needed as such a tiny item could have been posted through the letterbox. Good to have spares as these burst regularly.

Fit for purpose

Sold as a replacement safety vent for various electric showers these consist of a rubber disk around 11mm dia with a thinner star shaped section in the centre. If excess pressure builds up in the shower body the central bit ruptures and out comes water. Not really a valve as such - as once ruptured it keeps dripping which is probably why you are here :-)This looks just like the original, at 11mm or perhaps a fraction over it will be good firm fit and stop the 'leak'. Advisable to work out why the over pressure happened of course.All good

I've got a Triton shower, and if there's one thing I know about showers in my household is that at some point, the PRD is going to go, so I've got these ready for when it does. I haven't used them yet, but they look to be correct for my shower. There's not much to say apart from the fact that they're small, round plastic discs that fit on the pressure relief device. So, yeah, get 'em if you need 'em.