Harold Kestenholz
EXACTLY. As Sylvan indicates, if the pressure IN a pipe that is the same size throughout is reduced (the only way of doing that is to make a blockage) the flow will be REDUCED.
Conversely, if the resistance from one end of the piping system to the other is reduced, while subject to a pressure approximately the same from end to end, the flow can be increased; but only if a long section of the pipe is increased in size to create a reduced total resistance.
The variable is based upon whether the pipe is considered the same only if a section of pipe remains unchanged, or the piping is considered the same after a section of the piping is enlarged.
