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Originally posted by Brians256
The reason that I disagree with Turbokeu is that I believe that the key to removing air is to reduce velocity by increasing the cross-section of the flow. Having a wide body airtrap allows the water to slow down without presenting too much flow impedance. Right-angle bends are murder on your available head pressure. From what I've read and seen, a single right-angle bend is the same as having (I'm trying to remember the exact figure, so forgive me if I'm totally off) an extra 6 or 12 feet of tubing.
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As I said in another reply, I have two 20mm T's and ten 90° turns in my circuit, but they are "soft" turns. The biggest backpressure is probably caused by my "cube" style rad and my 8mm (3/8") flowsensor. I have still a flowrate of 4.4 liter/min with a 1250.
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I do have to agree with V12|V12 though: it is a pain to have to keep refilling the system to avoid creating the bubbles. I never took the time to properly seal the top of my airtrap (it needs a gasket) so I lose quite a bit due to evaporation: I end up putting about 1/2 cup of coolant in there every six months. And when it's low on coolant, the high velocity input into the res splashes, swirls around and sucks the bubbles right on into the system. It's annoying.
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This is why i didn't want the complete waterflow pass through the res.
CD
