I'm certified in water based fire protection system layout, also in inspection and testing of water based systems.

Quote Originally Posted by keith_r
Quote Originally Posted by cedarswamp
Quote Originally Posted by davidstcldfl
Quote Originally Posted by cedarswamp
Hydraulically speaking the friction loss difference between 1-90 or 2-45 is non-existant.
Hi Cedarswamp, there are sevearl charts online showing pressure loss in pipes and fittings. Here is a link to one of them.....
http://www.engineeringtoolbox.com/pvc-p ... d_801.html

Sorry I was speaking in terms of practical backyard application. The added turbulance created by the extra joints will negate any savings you realize from using the 45's. I do hydraulic calculations for my job.
what kind of hydraulic calc's? just curious,, i spent some time designing fire protection systems..