Quote:
Originally posted by bigben2k
myv65 has an article on this tubing issue, and he recommends using one size larger than the blocks inner channel size equivalent, or something like that...
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Oh really? I guess I'll have to go find it and read it sometime as it sounds very informative. LOL. Nah, I haven't gotten that far, yet.
In the meantime, I rely on
www.mcmaster.com for dimensional information about any fitting you can imagine. It takes quite a few clicks, but they have 2-D and 3-D images of all the fittings they offer.
As to the general reason why suction lines are larger than discharge lines, it has to do with velocity and pressure. If suction pressure gets too low, you'll have cavitation. Suction pressure is largely dependent on flow rate and area, which determines velocity. Lower the flow rate or increase the flow area, and velocity drops. As velocity drops, so to does vacuum level. So long as vacuum stays below ~15 in Hg, you should have no worries with cavitation.
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Darn forum clock got screwed up during the server switch and wouldn't let me post a new reply because this one was posted "in the future".
Hey Ben,
Quote:
Originally posted by bigben2k
He he...
Here's a quote:
"For maximum performance: Look for a pump rated in excess of 300 gph with 1/2” fittings. Match the remaining components accordingly so that true system flow is at least 90 gph. The flow path through the water block should be roughly .06 inches^2 (equivalent to about 0.3” diameter or about 1/4” by 1/4”) to maximize convection. "
The article can be found here
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Yeah, I kinda figured that's what you were referencing, but I was pretty sure it didn't say anything about going one size smaller.
Nice to know someone actually reads all the way to the end. . .
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