On Apr 19, 2:57*am, "Lew Hodgett" wrote:
"Robatoy" wrote:
We were talking about air nailers, not instrument air.

This was an oil burner.

Ah, any tiny orfice. A nailer? Not so much. *S*

Instrument air is a whole different world which is rapidly going away,
thank heaven.

Digital electronics have made 3-15 PSIG puff puff totally non
competitive.

And much more accurate/reliable.
That was already evident back in 1975 when I was involved with the
installation of 4 Bentley Nevada systems on units 1-4 at Hearn GS
Toronto. A lot of that was still analogue though.