Upgrading Pipe Sizes?

C

cooper.s

Feeder Fish
MFK Member
Aug 23, 2010
43
0
0
Essex, UK
I've got an FX5 with obviously 25mm Pipework and I've just brought a eheim pro 3 with 22mm Pipework
I've got a new 6x2x2 on its way and I am going to plumb it all in properly (plumber by trade so a little bit anal about having it all plumbed and looking the mutts) I'm just wondering if I upgrade the eheim Pipework will It cause any problems with the eheim pump? Bigger pipe only means better flow so I wouldn't imagine it would but just wondering if any1 has done this and had any problems?

Thanks
Sean
 
P

pigoo

Gambusia
MFK Member
Mar 25, 2013
322
0
16
United States
cooper.s said:
Bigger pipe only means better flow so I wouldn't imagine it would but just wondering if any1 has done this and had any problems?
Click to expand...
Not correct. A bigger pipe only means better flow...if...the original pipe was causing some sort of restriction. If the original pipe was causing no restrictions to flow...then flow will remain the same (gallons/hour). What will change is the velocity at which the water exits the pipe. Bigger pipe = slower velocity.

A pumps ability/capacity remains the same (gallons/hour). Thus a pump that is capable of pumping 400 gallons/hour...will still pump 400 gallons/hour. As long as the pipes being used do not create some sort of restriction to flow.

You may also want to read up on the "Venturi Effect".

http://en.wikipedia.org/wiki/Venturi_effect

In reality (going from 22mm to 25mm) may not be a super big issue. Just expect reduced water velocity exiting the ehiem.
 
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