We had been using this basin shower head attachment happily for a while, until a plumber came to replace the taps due to a leakage. The new taps (like the old ones) happen to be a pair of hot and cold non-mixer British/Irish taps but (unlike the old ones) with a smaller diameter, and here's the problem! The shower head attachment does not fit the tap anymore.
I've been to almost all local DIY stores, asking for an adapter, but they have no clue where I can find such a thing!
The diameter of the new tap is 1/2", and the shower head attachment has the two M22 internal, and M24 external threads.
We previously had fit M24 thread by just pushing and squeezing the tap head into it (which is possibly unlike the intended use), but that was fitting the tap perfectly well and it was functioning as expected.
Could you advise me what/where to look for to find an adapter/solution to this problem?
P.S. We cannot replace the taps again, because we've rented this place and the landlord doesn't care about our shower head attachment.
As you can see in images below (A1 & A2), when you turn on the tap, the water comes down as expected normally; now if you press the button on the shower head, it'll disconnect the water running down to the basin through the tap, and will direct it to the hose and the shower head.
What he had previously done was to squeeze the tap into the M24 head on picture D and that was working; but now I need some adapter that will allow attaching either of these to a 1/2" thread.
In case you need to learn more about the details of this product, you can see the manual here.
