Lets Try This Again...what Name Brand Air Compreesor
45 replies to this topic
Posted 17 March 2011 - 11:38 PM
I hope one day i will be able to help the new guy out like you all have helped me......and when that day comes he can ask all the questions he likes. Thanks again
Posted 18 March 2011 - 12:41 AM
thanks for all your help
Posted 18 March 2011 - 05:11 AM
Sorry to jump in in a thread where the only knowledge I have is from TU. I have never had a compressor, nor had I saw someone using it. But I have a question about the technical data.
That Harborfreight compressor has the auto shut off at 40 psi, and the auto-on at 3 psi.
I wanted to see if I could find something similar on ebay Germany. I found many compressor types, but they do not seem to have the auto-on at such a low pressure.
Here is an example, an oilless compressor with a tank, with 2 auto shut off possibilities, at 4 bar (or 58 psi) and 6 bar (or 87 psi). In both cases, the auto-on is at 2.8 bar (or 40.6 psi). Does that mean that you cannot airbrush at a pressure lower than 40.6 psi ? Or is there a further possibility to reduce the air pressure in your airbrush, if needed? They say it's an airbrush compressor, so ....?
I have used an inline translator to have that information in English, but I think I have already mentioned the important data for my question.
Posted 19 March 2011 - 05:48 AM
The auto shutoff is the maximum pressure that the compressor will reach before it shuts off.
That is typically the maximum safe pressure level for both the pump and the tank.
You can set it at lower pressures if you want to for painting, but you can't get more pressure out of the compressor than the maximum setting.
One of the reasons compressors with higher maximum pressure settings, typically around 125psi, and tanks are my preference is that I always have a big reservoir of pressurized air in reserve. And when I do draw the air pressure down low enough for the compressor to cycle, the pressure on the unit stays well above the painting pressure I have my inline regulator and water separater set for when I paint.
I leave my compressor shutoff set at 100psi, and my inline paint regulator at 40psi, so I always have plenty of air for painting.
Posted 19 March 2011 - 07:23 AM
I think you could see that I have no problem in understanding what the maximum air pressure automatic shut off is meant for (safety matter). My problem was in understanding why some compressors have the auto air on at 3 psi while others have it at 40.6 psi. And they are both meant for airbrushing. I thought that since the air pressure comes from the tank, and the pressure in it could not go under a certain value (in my example 40.6 psi), then what will you do in case you need a lower pressure in your airbrush? Obviously, you will adjust the inline paint regulator as you say. But I didn't know about this small aspect. I felt from the very beginning that I have asked a dumb question, but I couldn't figure out why.
Many thanks for replying to such a question.
Posted 19 March 2011 - 09:19 AM
Rofish, I saw your question, but must have gotten side tracked. I remember that I started typing the reply. Sorry about that. It certainly is not a dumb question. If you do not own a compressor, how would you know about regulators.
A compressor that does not kick in until the pressure drops to 3psi would be unbearable to use. That just does not sound right to me.