By Ernie Parker, CFPAI, CFPSD, CFPS, CFPMM, CFPMT, CFPMIP, CFPMMH, CFPMIH Many times, when we try to come up with a pneumatic circuit to do a particular job, we may think an electrical circuit would do the same job. In the circuit above we have two three-way switches and a four-way switch that will let […]
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