eBay was my solution, reportedly it was new old stock and the various fittings were from automationdirect.com. The main reduction regulator (Input 300 max-output 125 psi) can set up a harmonic in the tank when at full flow and whistle. I can say the dial regulators are fantastic if you routinely need different pressures (turned off in the image, when the tank is on that gauge will show 80 matching the dial.) The regulators are 1/2" ensuring decent airflow.
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Mike B
