Vanity Basin Mono Tap

[lancs_lad]

I have an Ideal Standard vanity basin with a mono tap with pop up waste that needs changing. I'm looking at fitting one with a click waste but notice the tap base is noticeably slimmer on the new one. Before I remove it can anyone confirm whether basin mono tap holes are all the same size?

 

[terryplumb]

Pretty much the same size hole ,give or take a couple of millimetres.
Tap base diameters vary quite a bit ,and those that have a lever operated pop up are generally wider than those that don't ,to accommodate the push rod.

 

[lancs_lad]

The taps miles too small . I took the tap out and having replaced everything found a plastic cap in the bowl. Everything's dry but for the life of me I can't see what the caps off so any ideas? I just don't want to end up with a flood. Pictures are the cap and installation.

 

[terryplumb]

Have you taken apart any of the waste fittings ? What diameter is that part ?

 

[lancs_lad]

I took the u bend out, cleaned it and put it back. I removed the tap and disconnected the pipework by removing the white pipe entering the grey elbows. The collars ( I found a 2nd one in the towel I used) are about the same diameter of the smallest white pipe you can see.

 

[terryplumb]

The smallest white pipes are water supply pipes ,and you reckon they are the same diameter as them ?
That's odd ???

 

[lancs_lad]

Yes that's what I thought. The first image also shows a groove on the outer edge.

 

[Exedon]

If that collar is 15mm it's part of one of push fit fittings goes in first before O ring.
Also you say your taps too small? are you sure there isn't a larger chrome ring that sits on basin before tap?

 

[lancs_lad]

Mystery solved https://www.johnguest.com/gb/en/pro...r prevents,can slide into position afterwards.

Three was no large chrome ring