Max Pipe Work Flow...

[drsquirrel]

I cannot for the life of me find or remember the max water flow rates for X sized pipe work etc.

Specifically I am looking for max flow of 25mm piping.

Any ideas/links?

 

[noxious_nasties]

25mm poly pipe can be used when a large flow rate is required or distances are greater than average. Maximum flow rate through 25mm is around 55-60 litres per minute.

taken from http/www.wetearth.com.au/content/design.asp

 

[OldMan47]

Maximum flow will depend largely on differential pressures that are moving the fluid and on the fluid's viscosity. Water has a nice low viscosity so that part becomes easy to overcome, you method of pumping through the tubing is what determines the differential pressure. For a gravity feed system, your 25 mm tubing will move far less water than the same size attached to a sink's faucet.