Orifice Flow Control of Pipeline Shielding
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Mounting an orifice at the
pipeline gas drop (unlike
mounting it at a wire feeder) is
a good method of setting shielding gas flow rate. It also works great
when used in combination with our
Gas Saver System
(GSS). Using the
GSS will eliminate excess start gas surge
improving weld quality
and will save 35% to over 50% of shielding gas usage!
Desired gas flow rate is
established by selecting the proper orifice size. If the pipeline pressure
is 30 psi or higher the flow will remain constant regardless of inevitable
flow restrictions that occur while welding
pressure with our
orifice size based on pipeline pressure and gas type.
To optimize orifice size selection we have
developed a system where one of nine optional "Orifice Inserts" can be easily
changed if or when needed.