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Secondary Air Tank.

 
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Old 01-21-2011, 06:57 PM   #1
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Secondary Air Tank.


My massive operations have a MAC 2400 that I use primarily in the shop and a MAC 700 for the road, it's fine for most applications. But just not up to the task for HVLP and the like.

I'm thinking I might pick up a 12 gallon air tank and set it up down stream of the compressor. I could set it up where both compressors feed the tank when I need a lot of air.

Seems to me it would provide more air, less water in the lines, and a lot less wear on the compressor. All for $30 and some parts I already own.

Anyone do something similar? Any downside's I haven't thought of?
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Old 01-22-2011, 12:49 AM   #2
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Re: Secondary Air Tank.


For anything air you really aren't going to be able to run tools or guns properly with a compressor that is undersized even with a larger tank. Even if you add storage, once you hit a tank pressure below your required pressure you'll need to stop and wait for it to catch up, which will take about 8x the time and put a lot of wear on the compressor. I would just purchase a properly sized compressor when possible and just paint slowly until then.

Your current compressor will thank you.

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Old 01-22-2011, 01:43 AM   #3
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Re: Secondary Air Tank.


There is little downside to running two compressors linked together. A lot of comercial shops have dual pump setups. Adding more storage capacity will certainly help with your spraying needs. You might want to see if you can find a lower cfm air cap for your gun. They make a huge difference on air demands.
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Old 01-22-2011, 11:04 AM   #4
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Re: Secondary Air Tank.


It will help somewhat. Hook it up before the regulator for maximum benefit. I "T" mine off the safety valve connection w. 3/8" not 1/4" QD's for best air flow. HVLP hi flow 1/4" connectors can work too. I think the std. QD's are too restrictive to fill a tank efficiently.
My Wagner CAP HVLP conversion gun does OK w. my Thomas air pac twin or Hitachi EC12. I use a goodyear rubber 1/2" hose with the larger QD's.
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Old 01-24-2011, 03:23 PM   #5
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Re: Secondary Air Tank.


One concern about an extra tank inline is when/if you disconnect it downstream there is no stop and the air will dump fast and furious, unless there is a shutoff and it is shutoff.
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Old 01-24-2011, 03:40 PM   #6
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Re: Secondary Air Tank.


Quote:
Originally Posted by migcarp View Post
One concern about an extra tank inline is when/if you disconnect it downstream there is no stop and the air will dump fast and furious, unless there is a shutoff and it is shutoff.
For a similar reason I installed a 1/4" high flow check valve on my 100' 3/8" Goodyear hose. At one point I was using wrought iron Universal Connectors no restriction there. I deemed it overkill for a 1.8HP Craftsman Belt Drive compressor.
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Old 01-25-2011, 04:02 PM   #7
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Re: Secondary Air Tank.


Air tanks have a shut off on the tank already, if you are buying the ones usually available. My 2 both have them.

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