Problems setting compressed air pressure via
regulator and keeping it there?
If you are having a problem trying to set the regulator on your
air compressor which is resulting in the pressure in your air
lines bouncing back up to maximum, even after you have set the
regulator down to working pressure, or "pulsing" when you first
allow air through until the air drops to the pressure you have
set via your regulator... try this:
To set your desired pressure, allow your compressor to fill its
tank to maximum pressure, connect your air tool and let air run
through it continuously etc. While the air is running through,
adjust regulator down to 0 pressure, so basically no air is
coming through. Then start adjusting up to your working pressure
until it is showing correctly on your second gauge (closest to
air tool) and then lock the regulator down at that point. Doing
it this way stops the air line filling back up to max pressure
and "pulsing" the air flow again when you first allow air to run
You can't start at max pressure and then try regulate down, at
least it didn't work with the regulator I have on my compressor.
I had to go to 0 pressure, then adjust up to desired pressure.
This way it keeps the air in the line at the pressure you have
selected after you have let go of the trigger.
May be obvious to many, but it's something the manuals never
This is also a very useful tip for spray painting and finishing.
You can adjust your pressure up from 0 until you see a good flow
of air and paint/finish coming from the spray gun. Then just
lock the regulator at that pressure. It helps avoid having
pressure set too high and giving a poor result and orange peel
effect as well!
Also, if you bought a budget compressor, the
stock regulator on the compressor may be poor quality. Adding a
better regulator will give more accurate results and the better
quality regulators are generally easier to adjust as well.
- Some regulators have an arrow marked on them to show
direction of flow through the regulator. When adding a new
regulator, make sure you attach it so that the direction of flow
of air from compressor to air tool flows in the same way as the
markings on the regulator.
- If you are spray painting or spray finishing,
add an inline water trap to reduce moisture in the air lines and
give you a better finishing result. Excessive moisture in the
air line can ruin a finish, especially if you live in warm,
- If you are setting pressure for a nail gun, you
must first use a different air tool (such as an air duster or
high pressure spray gun) to set your regulated air pressure
first. Obviously, you cannot, and do not want to try and get air
running continuously through a loaded nail gun!
Hope that helps!
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