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Does 3/8 or 1/2 tubing make a difference for the pump concerning sound

post #1 of 6
Thread Starter 
I know it doesn't make a difference when it comes to cooling.
The impact of tubing sizes

But if you are using a Liang D5 Vario (Swiftech655) or a Swiftech 35x with PWM it could make a difference to how much work and therefore noise the pump will make.

Any thoughts on this?
post #2 of 6
I know the pump sound changes if I squeeze the tubing and restrict the flow, so I would vote yes. What the change is though will depend on the loop. The pump had to work harder, so the whine related to the spinning impeller went down in tone (it slowed down). Not necessarily a bad thing on its own, depending on what you are sensitive to. Overall, I perceived less noise.
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post #3 of 6
no... you wont notice any difference between 3/8" and 1/2" tubing either in noice or performance
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post #4 of 6
Quote:
Originally Posted by zoid.srg View Post

no... you wont notice any difference between 3/8" and 1/2" tubing either in noice or performance

Another opinion. Based on what I said in my post, this makes no sense at all. I hope someone actually compares the two and posts the result. It would not be the first time the logical answer was proven to be incorrect.
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post #5 of 6
Quote:
Originally Posted by Capt Proton View Post

Another opinion. Based on what I said in my post, this makes no sense at all. I hope someone actually compares the two and posts the result. It would not be the first time the logical answer was proven to be incorrect.

Squeezing the tubing isn't the same though. You're probably creating a lot more restriction from squeezing than you would from just smaller tubing. You're not only reducing the diameter of the tubing, you're forcing the water to change direction slightly.
Edited by earthwormjim - 4/28/12 at 4:38pm
post #6 of 6
Quote:
Originally Posted by earthwormjim View Post

Squeezing the tubing isn't the same though. You're probably creating a lot more restriction from squeezing than you would from just smaller tubing. You're not only reducing the diameter of the tubing, you're forcing the water to change direction slightly.

you are talking about a matter of degree, not an absolute. Squeezing may be "a lot more", but, in your own words, the same result.
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