K
Kirsten2727 Jun 2022 19:06Hello everyone,
I am urgently looking (as a layperson) for a drain valve for a washbasin in my guest bathroom that meets the following requirements: A) a thread length of more than 130 mm (5 inches), B) a diameter at the first upper resting ring (the "counterpart" to the cover) of 65 mm (2.6 inches), and C) a matte black finish. I want to install a natural stone washbasin on an old workbench, and my main issue is that the bore hole resting edge (or whatever that part is called) of the washbasin has a diameter of 65 mm (2.6 inches) 😳
I just can’t seem to find anything suitable. Do you have any tips or ideas on how to proceed?
Thanks in advance, best regards!

I am urgently looking (as a layperson) for a drain valve for a washbasin in my guest bathroom that meets the following requirements: A) a thread length of more than 130 mm (5 inches), B) a diameter at the first upper resting ring (the "counterpart" to the cover) of 65 mm (2.6 inches), and C) a matte black finish. I want to install a natural stone washbasin on an old workbench, and my main issue is that the bore hole resting edge (or whatever that part is called) of the washbasin has a diameter of 65 mm (2.6 inches) 😳
I just can’t seem to find anything suitable. Do you have any tips or ideas on how to proceed?
Thanks in advance, best regards!
B
Benutzer 100128 Jun 2022 00:12A diameter of 63mm (2.5 inches) is standard; the extra 2mm (0.08 inches) is hardly noticeable.
Grohe also offers a special extension piece.
Alternatively, you can drill a counterbore from below into the workbench.
Grohe also offers a special extension piece.
Alternatively, you can drill a counterbore from below into the workbench.
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