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-   -   Proper pressure setting for pressure pot supply? (http://www.hotrodders.com/forum/proper-pressure-setting-pressure-pot-supply-216094.html)

777funk 03-05-2012 04:06 PM

Proper pressure setting for pressure pot supply?
 
I have been using a pressure pot and Iwata LPH-200 with a 1.2 nozzle (the biggest nozzle in Iwata LPH-200 pressure pot guns) for a while now and with a broken pressure gauge so I had no idea what my pressure was. Recently I finally got around to replacing the binks gauge and I find my usual setting (gives a 3' pee stream if I turn the air off to the gun), is around 2 psi on the new 0-15 psi McMaster Carr gauge.

The problem I run into with this is that the regulator tends to fluctuate as the pot sits. It's like it's building up around to around 5-7 after a few minutes of sitting. The reason I ask about the usual (proper) pressure is that it seems to want to sit at around 5-7 and won't adjust and stay where I use it.

Not that I can't just re-adjust before I spray each time but half the reason I use a pressure pot is so I won't have to mess with constantly filling my guns (the pot is convenient). Curious if I'm spraying at too low a fluid pressure or if maybe I just need a better (accurate at very low pressure) regulator.

shine 03-06-2012 09:47 AM

shut the air down to the pot after spraying. adjust before you start.

777funk 03-06-2012 11:20 AM

Quote:

Originally Posted by shine
shut the air down to the pot after spraying. adjust before you start.

That should do the trick. Great idea shine. I usually spray a coat, wait an hour and do another coat. That waiting an hour part is when the pressure tends to creep up. If I come back for the next and don't check the regulator/pressure that's where I'm running into problems. I'll try shutting the air off between coats. I wish there was a regulator that was accurate at very low pressures. I'm guessing if there is, it's $$$.


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