Originally Posted by RoadKing
Why do you need needdle valves at all? Control the flames with the ball valves. After the ball valves use a 1/2" male thread x 3/8" flare or compression fitting.
You do not need needle valves at all, but precise flame control is difficult with ball valves unless you extend the handle by ten feet. Trust me. I had no needle valves for a few batches and quickly realized that needle valves are highly desirable.
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