Imagine my delight!!

I don't have the answer, but I've had similar problems with sink wastes.

SWMBO bought some fancy Italian underslung sinks for the new granite worktops from a UK Internet site. They came with matching wastes. I come to hook it all up, and find that there is no trap available in this country which will make up to the waste. At our local plumbers merchant, as soon as I walked in holding it he eye-balled it and said "Fancy Italian sink, huh? No chance. Just chuck the waste away and replace it with a standard one." Which I did. I was one of very many he had seen recently with this problem.

Was a bit of a hassle, though, since it was difficult to get one with the correct overflow fittings too.

That ain't standard!

???

The message from "John" contains these words:

What did you measure it with? The figures you quote are close to 5/8 BSP:

tpi 14 major 22.911 minor 20.587

Measured with a vernier caliper in not very good light so might be slightly wrong. 5/8" BSP would make sense as it is between 1/2" and 3/4" BSP but I have never seen a 5/8" BSP fitting for use in a domestic situation, but I will be educated if anybody else has.

Cheers

John

Sorry, guess I was stating the b*&$£y obvious there!

A link for you:-

Al

Could there be an American influence here? I had a similar problem on a truck I owned until recently, the hydraulic fittings were BSP, the air fittings were NPT, that's the American stuff. Not far out, but not interchangeable.

Steve

The message from "John" contains these words:

Neither have I but the Chinese could perhaps be forgiven for thinking that any standard thread would be acceptable.

The message from "Al" contains these words:

Am I missing something as I don't see any reference to BSP threads?