06:49PM | 04/14/07
Member Since: 11/01/06
34 lifetime posts
which is better... when sending a copper pipe 90 degrees... is is better to make it 90 or use 2 times 45 degrees... all this of course for the sake of flow!



01:09PM | 04/15/07
Member Since: 01/24/06
1567 lifetime posts
You did not state if this is drainage or heating or water supply.

In any event the best way to avoid excessive friction loss without a doubt is the use of 45 degree fittings

The equivalent pressure loss for example from what I remember in 2" nominal copper the standard ell would be 5.5 feet of tubing and a 45 degree would equal 2

On 3/4 an 90 = 2 and a 45 =.5

Try to use wrought copper fittings as opposed to cast as the internal area is smoother


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