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Air flow question


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#1 Super0dp

Super0dp

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Posted 08 July 2013 - 06:48 PM

So in the quest to make an SvT4B, I acquired a pump. The pump has a ball needle attachment and this needle just so happens to fit it the tubing I'm using.
My question is will I get higher pressures or faster filling of the tank if I use the needle attachment or just stick with the tubing?
The needle has a really small opening, maybe 3/4 of a milimeter or larger. The tubing I'm using has roughly a 1 1/2 milimeter (judging by the needle size) inner diameter.
I can make an adapter from a 1/4 OD 1/8 ID standard barbed fitting from Mc Master. This will provide maybe 1 milimeter of room around the needle.
So will the needle provide more preasure or more airflow? Or will the tubing alone be better.

Edited by Super0dp, 08 July 2013 - 06:49 PM.

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#2 DartSlinger

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Posted 08 July 2013 - 07:31 PM

The needle will not provide more pressure or airflow: it will actually decrease airflow. The larger the inner diameter of the tubing, the higher the possible airflow. You should just use the tubing.
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