"Darth Ai" wrote in
k:

That's 28mm pipes for you!

mike

Not necessarily a problem as the rise is vertical straight to the
cylinder. I'll have to step down to 22mm for the final turn and
connections, though.

I really meant that 28mm pipes are good for convection because the fatter
the pipe, the better; if you're pumping you don't need such thick pipes.

And do you have to step down? surely the necessary fittings are available,
and after the awful things I've just ripped out I'm getting obsessive about
not introducing any unnecessary constrictions!

mike