The Planted Tank Forum - View Single Post - Needle Valve - Swagelok S Series not cutting it!
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post #8 of (permalink) Old 12-31-2012, 03:05 AM
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^ basically, all you have to do is loosen the Allen on the end and slide the handle out until you hit your lowest desired rate. Move it too much and tighten it down too hard and you'll break it. Go in small increments.

If set correctly, you'll have about one turn to from zero to about one and a half bubbles per second.
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