I’ve got a problem, a visitor wrote. The tank is full, the regulator is set for 120 PSI, yet no air comes out of my air line. They had connected the air line to the air tool, pulled the trigger on the air tool, and almost immediately, the air tool died from air starvation.
I reviewed for them the typical flow of air from the compressor tank to the air tool. Compressed air from the tank typically flows from a hard nipple on the tank. It wasn’t likely that that flow was obstructed there.
Air would then flow to a small air regulator on the line from the tank to the coupler where the air line connector was inserted. I suggested that they pull the regulator out of the circuit for a time, just to see if something in the regulator had failed, and was blocking air flow. To do that, they would have to add a Tee before the regulator onto which they would install a coupler, or simply remove the regulator and thread a coupler onto the pipe where the regulator had been installed.
I also wondered if they were using mating couplers and connectors? If they had recently acquired new connectors for their air tools, perhaps there was a mismatch between the connector and the couplers? Some connectors will seem to lock into another brand of air coupler, yet the internal check in the coupler may not be off-seated sufficiently to allow full air flow.
If the air tool was not getting air then there had to be an impediment in the flow of air from the compressor tank… somewhere.
It turns out it was an impediment blocking air flow in the circuit, but for me, an unusual one.
They tested all components in the air circuit, and found that when they used a certain air hose, that’s when the problem of air tool starvation occurred. Turns out that the internals of the air hose had deteriorated to the point where, under air pressure, parts of the lining inside of the air hose itself would bend and block clear passage of the compressed air. They carved the line apart to figure that out.
There are only a few components, normally, in an air circuit from the tank to the air tool. Typically they maybe an air filter, then a regulator, the discharge coupling from the air line manifold on the tank, the air hose and the air tool. If you have air in the tank and it’s not getting to your air tool, one of these is compromised.
Got a question or a comment about why no air comes out of my air line? You can add it below.