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Compression fittings - quick question

post #1 of 7
Thread Starter 
What is the difference?
http://www.frozencpu.com/products/80...409s1033#blank

http://www.frozencpu.com/products/11...409s1033#blank

What is rotary?

Thanks.
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post #2 of 7
One has a rotary one dont
A rotary lets you turn the fitting without unscrewing it mostly used in 45 and 90 deg. fittings so when there tight and not pointing to the right place you can turn them were you need to
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post #3 of 7
Rotary means that it can "spin" or rotate after it has been secured and tightened. This is useful for angled fittings as when they become tight, it might not be in the direction you need it to be.

Generally, rotary straight fittings are really not necessary and I would save the money.
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post #4 of 7
The second fitting has a spacer. Rotary means the top half of the fitting can rotate 360 degrees. Hope this helps.
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post #5 of 7
Thread Starter 
Thank you guys.
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post #6 of 7
Picture putting two compression fittings on your block, and then attaching the tubing from a tight bend. If the bend happens to be putting stress on the fitting, it will cause it to try to turn to relieve the pressure. With a standard fitting, the fitting will likely turn, causing it to loosen and possibly creating a leak. Rotary fittings have an O-ring in the middle that acts as a "joint" allowing the fitting to turn without it loosening from the block.

If you have pretty straight forward lines with minimal bending, you may not need rotary fittings. I personally have several in my loop as I do have some rather tight bends and would rather shell out the few extra dollars to prevent any leaks caused by tension of the tubing forcing my fittings to loosen.

My

Edit: Rotary fittings are especially useful when using 45 and 90 degree parts. Straight fittings aren't as bad per se, but still pose the risk of loosening. Trying to over-tighten the fittings to prevent this will cause more harm than good FYI. (It can crush the O rings, breaking the seal.)
Edited by HAF_wit - 11/4/11 at 11:55am
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post #7 of 7
Actually I use the rotories on my CPU block and only on my CPU block. It helps with runing the hoses in the different directions and keeping it tight...since that is ussually the worst place for a leak to happen
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