Single lever monobloc mixer tap with new cartridge is still leaking (not dripping from spout).

[Welder]

No

Right - I think the guy may have judged it by the torque to undo it - including the limescale stiction!

Is that big brass top nut standardised? - I measure it once at 30mm (across flats), 2nd time 32mm, and just for fun (showing my age) 1 3/16 inches.
I was cringing to see a mole wrench tightened onto it, there's not a great deal of metal thickness in places.

Many the same but there is no standard.

 

[Welder]

Firstly find an identical cartridge. Make sure it has the filter mesh inside too. Make sure its tested to 6 bar plus.
Install it having cleaned all the seats. Tighten the lock nut literally finger tight and turn on your supplies just enough to begin to pressurise. Tighten the nut up enough to simply stop it leaking - I'd suggest a 1/4 turn at a time. Once it stops do another 1/8th turn.

 

[Phil157]

Thanks Dave, I think the cartridges are identical and with mesh.

I haven't been able to get to it today so timing is good. Excellent torquing advice, thanks - bit like my Mini front hubs nuts; tighten so far then a bit more until you can get the split pin through the castellations; takes me back a couple of decades!

 

[Phil157]

I've not been around for a while and just wanted to thank everybody for their contributions. I now have 1 tap that refuses to stop leaking, but the attached photo should explain why!

Having prepared myself to email the manufacturers and parts people etc. I googled "spare parts for taps" - the first link was to Ebay and their first listing had a photo I immediately recognised for a 40mm top nut and cover!!!
I'm expecting it soon and have fingers all crossed.

cheers guys, Phil.

 

[Debbie]

Did you get this problem sorted? I am having the same problem....changed the cartridge but still leaking from the bottom of the shroud

 

[Phil157]

Hi, Debbie. The answer is no I'm afraid, i.e. I replaced both taps with another make (and no leaking). The bath tap is identical in its workings and when investigated showed evidence of long-term leaking also! That makes all of my flat's taps except for different in kitchen.
I'm currently living with the bath tap leak - drilled through (plastic) shroud, with hole at the back and not visible and a little silicone grease around the shroud to restrict water's exit to the hole; BUT surface tension stops the water escaping through the 1/8 inch hole - it has to be encouraged by tapping with a finger!
Sorry I can't help, except to say that my new £20 taps work well, are very smooth, look good and well made; fingers crossed for longevity. (Oh, and if same model tap, be aware how BIG they are when considering a replacement perhaps - I'm OK with my smaller taps, not too much out of scale with basin)

 

[Debbie]

Hi, Debbie. The answer is no I'm afraid, i.e. I replaced both taps with another make (and no leaking). The bath tap is identical in its workings and when investigated showed evidence of long-term leaking also! That makes all of my flat's taps except for different in kitchen.
I'm currently living with the bath tap leak - drilled through (plastic) shroud, with hole at the back and not visible and a little silicone grease around the shroud to restrict water's exit to the hole; BUT surface tension stops the water escaping through the 1/8 inch hole - it has to be encouraged by tapping with a finger!
Sorry I can't help, except to say that my new £20 taps work well, are very smooth, look good and well made; fingers crossed for longevity. (Oh, and if same model tap, be aware how BIG they are when considering a replacement perhaps - I'm OK with my smaller taps, not too much out of scale with basin)

 

[Debbie]

Thanks for getting back. It's so frustrating, we changed the cartridge and all was OK until the following day, just a slight drip. Did a someone said on here and turned the water back on before putting the handle back so we could see the leak then re tightened the retaining nut and it all seemed to be ok, have coated everything in silicone grease and last night it was OK....got up today and after using its dripping again. Mines a Bristan liquorice hose tap. I may look at replacing. Thanks again