DavecUK Interesting I will try this next time. I replaced my original valve but that one started dripping also after not very long. Went to buy another one but they had doubled in price which seemed crazy. Instead I tried replacing the Teflon tip with ‘Sugru’. Works really well with no drips at all but only lasts around 3 months before needing re doing. Not sure if it is appropriate stuff to use but guessed it was low risk and probably no worse than Teflon!. Would love to try changing to a non compression (not sure if hat is the right terminology) but haven’t got round to researching if this would be feasible.

And as to the OP finding cleaning helped, my experience was that it did, but not for very long, so my prediction is it will need sorting again pretty soon.

      Spookym How did you replace the tip? I looked at mine, and it is hard to tell how that piece of teflon is attached.

          dndrich I think I just dug it out with a small screwdriver. It is just pressed in I think and it goes down around 5mm. Once you get it started it comes out pretty easily.

              Spookym OK, interesting. When the old one fails again, I will swap it out with the new one and dig out the piece. I like the notion of that rubber recommended above, and might try to find that to jam in there.

                  dndrich definitely worth giving it a try. Even though the stuff I have been using has to be re done, it is much nicer not having any drips and worrying if other family members may be over tightening etc

                    2 months later

                    Just feeding back on this. I found I had an o ring that was made from 7mm diameter cord so thought would give it a go. Did it 4 weeks ago and it’s been great since, no drips, no worry about over tightening. The internal diameter of the valve tip (after digging out the Teflon) is 6.25mm so 7mm seems good, as easy to get in and stays in (tried 8mm as well but couldn’t squeeze in). The depth of the steam tip recess is only 2.9mm, so you don’t need much cord!. Not sure how long mine will last as probably not high temp material so will get some of the stuff dave linked to sometime. Surprised they use Teflon over this approach as replacing a tip surely better than having to replace the whole valve.