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Old 04-11-2016, 10:14 PM   #1
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What can I do with 8-gal air tank?


I'd like to incorporate an 8-gal portable air tank that I've had for years into my pancake air compressor, but the compressor shuts off at 135psi and the portable air tank is rated for 125psi. I've not found a way to lower the shutoff pressure on the porter-cable. Any ideas.

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Old 04-11-2016, 10:21 PM   #2
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Re: What can I do with 8-gal air tank?


OK so what's the model # of the compressor?
How old is this tank?

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Last edited by joecaption; 04-11-2016 at 10:23 PM.
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Old 04-11-2016, 10:33 PM   #3
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Re: What can I do with 8-gal air tank?


A secondary regulator between the pancake and the portable, set to stop the portable at 125, and continue to pressurize the pancake.

Plumbed in series, with the outlet hose after the portable.

It all will need to be mounted on a carrier, so the unit can be transported to the next job.


Looking forward to seeing your creation.


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Old 04-11-2016, 11:01 PM   #4
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Re: What can I do with 8-gal air tank?


10 Extra PSI is not likely going to blow up the tank, there pressure tested for way more then the max rating, my main concern is with possibly trying to reuse an older tank.
Ever seen what happens when one of them blows up?
Does the tank at least have a pressure relief valve?
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Old 04-12-2016, 08:26 AM   #5
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Re: What can I do with 8-gal air tank?


Beside the concerns mentioned on the rating and condition of the auxiliary tank, it sounds like a significant enough increase in volume that I would not be surprised if the end result turned out to be less than satisfactory. Depending of course on what you want to achieve. As far as running air tools, sure, it's going to give you more volume when you first use it, but it's going to take considerably longer to bring that additional capacity back up to pressure, meaning the pump and motor are going to run longer, possibly going beyond their intended service factors. Meanwhile, you are waiting longer to run the next nail or whatever.
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Old 04-21-2016, 07:33 AM   #6
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Re: What can I do with 8-gal air tank?


Does anyone know how thick are steel walls on this small air compressors?

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