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Elbows and Increased Inner Diameter (ID)

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aldamon

Member
Joined
Jan 22, 2003
Location
Durham, NC
I bought my setup second hand and the DIY reservoir the seller made incorporates an elbow fitting as an intake barb. After reading these boards, it's clear that elbows are bad for flowrate, but one thing intrigues me: The intake elbow has an ID of 1/2" (5/8" OD) instead of 3/8" ID (1/2" OD) like my CPU block, pump and radiator. In fact, I had to heat my 1/2" ID Tygon tubing just to slide it over the elbow barb.

Does the increased diameter help alleviate the flow restriction of the elbow? I was thinking about making another reservoir, but I'd rather not disconnect my system again.
 

Glaze132

Member
Joined
Oct 27, 2002
Location
Las Vegas, NV
That one elbow won't do much of anything to your flow unless you are using a pump that is less than 150gph otherwise I say don't worry about it.
 
Last edited:

Yuriman

Member
Joined
Aug 27, 2002
Location
The OCFORUMS
It helps, yes, but the 90degree turn is what realy hurts. I got some copper tubing bent into some gradual elbows for me, and they work great.