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At 06:06 PM 9/1/2004 -0500, you wrote:
FWIW, I picked up a couple cheap, plastic fuel filters today, and will look
through my TIG and plasma parts to see if I can find a suitable restriction
to go along with it.
On very high-end pressure gauges (like for a laboratory) they put a damping orifice on the inlet to keep pulses from damaging the movement.
Instead of a simple pin hole, they use a hole with a wire through it. The gas flows though the space between the wire and the wall of the hole. The beauty of this approach is that you can make a very restrictive choke that does not clog easily.
They use a short section of wire and they put a 90 degree bend in each end to keep it from slipping through the hole.
Bill D.
(Selling lots of LED Position lights http://www.killacycle.com/Lights.htm )
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