What size pipe to use?

[Hack 73]

Hi All,
Sorry yet another question.

I'm teeing into existing pipe work to create feeds for a standard bar style shower. We've just had a new cylinder fitted which now pushes all the water round the house at mains pressure.

The pipes I'm teeing into are both 22mm. Am I best using a reducing tee and doing it all in 15mm to the shower (about 2m) or alternatively using 22mm and then reduce nearer the shower outlets. Or thirdly am I thinking to much and it makes no difference either way?

Thanks in advance

Graeme

 

[Nige F]

4) connect and reduce where it's most convenient/easy for you - mains pressure will cope.