On Fri, 20 Oct 2006 02:48:53 GMT, "Edwin Pawlowski"
wrote:


wrote in message
.. .

In the original post increasing the size won't do anything measurable,
"Can't happen. Won't happen" I don't think so.
In theory and in practice with long runs pressure drops will add up
and increasing the pipe diameter will increase the pressure at the
output end.

Increasing pipe diameter reduces restriction on the flow. Static pressure
remains exactly the same. There will be less pressure drop once the flow is
started. But pressure is never increased by larger pipes.

Static pressure is no more important than the relative humidity when
it comes to taking a shower. Who cares?