In article .com,
wrote:
I have a 1" BSP male connector (I think!) for the hot and cold
water supply to my thermostatic mixer valve.

This sounds unlikely: all the shower mixers (not many admittedly)
I've come across are 1/2" BSP - roughly 3/4" across the threads (when
used with iron pipe the pipe has an internal diameter of 1/2" thus
the name)

--
Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk
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