Yeah, 15 CFM will piss off a air grinder. I ran my shop for years on a Home Depot special 80 gallon / 5 HP / 19CFM with me and 2 guys. I could do everything but sandblast and even then I could for 20 minutes or so before I had to let the compressor catch up.
Inly thing I see if I would think for space savings you will want a vertical.
As for phases, that refers to different types of power supply. Houses have single phase power, most businesses have single phase, some have 3 phase.
Dual stages means the pump makes pressure on both strokes
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Frank Serafine
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