Shop air dilemma

1 phase vs 3 phase has nothing to do with how fast a compressor pump will pump. 1 stage pump vs 2 stage does. As well as volume and max pressure.
And no, running an air tool at more than 90 PSI doesn't make for a bomb. We have no regulators at the drops at work, been doing this for 30 years, never had a tool explode on me. Depending on your fittings and hose diameter sometime you gotta run higher pressure to make up for low volume. And, no, a rating of 175 PSI is NOT a "gotcha sucker" sort of thing for the uneducated/unsuspecting. I have never seen a 1 stage compressor rated anywhere close to that. Most single stage rate CFM at 40 and at 90 and the cutoff is set to about 120.
Most 2 stage compressors are rated at 90 and 175 PSI. And are set to pump to 175 as well.
This has nothing to do with single or 3 phase electric required to run a given unit.
Look at the certification tag welded onto the tank.
It will give a year of manufacture as well as max pressure,and usually tank thickness for the barrel and for the end bells. My 2 stage unit which regularly pumps to 175 before it cuts out is rated for over 200 psi. I forget the actual number on it, but there is a large safety factor built into that rating.
What the maker or certifier has zero control of is how often the water is drained, how humid the air going thru the unit is, etc....
We just got a new unit at work about a year ago, the old one's tank was from the 1990s and the compressor and motor were from the 1950s. They had replaced the tank somewhere along the way.
My unit at home is from 1987. I have rebuilt the compressor head once and I had to take the motor in once, I have had it since about Y2K or so. And I got it used out of the newspaper, had been a backup for a body shop before I got it.
And I have no plans to replace it. I have access to another 120 gallon tank that I may pick up as an auxiliary, so that would boost my reserve to 200 gallons.
Yes CFM matters. But reserve capacity definitely helps as well.