Tim S wrote:
Anyone know where you can get it?

have you tried BSS http://bssindustrial.co.uk/ or their plumbing
subsidiary PTS http://www.ptsplumbing.co.uk/ as I think BSS are the UK
manufacturers/distributors? (My plumbing is kindergarten level so I
find them a bit daunting when I venture into my local branch, although
they have so far been gentle with me.)
--
R