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misty air coming out of air hose even with water separator? #5390547 03/31/20 11:22 PM
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motor_oil_madman Offline OP
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So where i'm at it's not uncommon to have 80 percent humidity most of the time, which makes me wonder if its just the humid air we have. If I have the blow gun attached and press it all the way down I can see what looks like slightly foggy air coming out of the outlet. It's not anything that's going to get your hand wet or anything like that, but what causes this? I'm going to assume that the water separating filter is probably saturated with the 80 percent humidity, so that's as good as it gets in my area? Or is that assumption wrong?

Last edited by motor_oil_madman; 03/31/20 11:24 PM.

2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390553 03/31/20 11:56 PM
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SLO_Town Offline
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Isn’t that just moisture in the ambient air condensing from the super cold compressor air? A CO2 cartridge will do the same thing.

Scott


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Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390563 04/01/20 12:35 AM
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user52165 Offline
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Have you opened your tank drain lately?

Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390573 04/01/20 01:14 AM
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How is your system plumbed? Good high capacity Desiccant Dryer Systems can run $600-$700, Refrigerated Air Dryers with high CFM ratings can run several Thousand.

Your compressor probably doesn't aftercool each stage, Manufacturers have gotten away from it to cut costs....Even the big names in the industry like Quincy. Though they probably offer it as a $$ option.

My dual aftercooled Kellogg American doesn't push much water into the discharge, But I live in a dryer part of Texas. I have my main feed line "whip" well above the compressor which helps water stay/drain back into the tank where it can be drained off each day. I also have a drop leg trap near that to catch water during those rainy/humid days.

Duty Cycle plays a big role here.....The more you run the compressor, The hotter the air temp will get, The more water will be made.

You can make your own condensing unit, Like this.......



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Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390591 04/01/20 03:35 AM
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Do you use the compressor a lot? Check the tank drain like mentioned above?

It would be odd to notice any JT effect with a blow gun, but you will with a die grinder or the likes if you run it long enough. The case on them can get ice cold due to JT effect.


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Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390612 04/01/20 04:52 AM
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dave123 Offline
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Need more info on setup but in general you Can NOT take water out of hot air..

Re: misty air coming out of air hose even with water separator? [Re: JTK] #5390778 04/01/20 09:47 AM
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motor_oil_madman Offline OP
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Originally Posted by JTK
Do you use the compressor a lot? Check the tank drain like mentioned above?

It would be odd to notice any JT effect with a blow gun, but you will with a die grinder or the likes if you run it long enough. The case on them can get ice cold due to JT effect.


No it will still do it with the existing air in the tank when the compressor hasn't even cycled on that day.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390784 04/01/20 09:50 AM
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motor_oil_madman Offline OP
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No the compressor doesn't cycle on very much.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390804 04/01/20 10:15 AM
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I drain my tank after every use and that is what the manufacture recommends. Ed


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Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390820 04/01/20 10:33 AM
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motor_oil_madman Offline OP
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I just crack the ball valve open for a few seconds to drain the tank of water. An empty air compressor doesn't do me much good.

Last edited by motor_oil_madman; 04/01/20 10:34 AM.

2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5390875 04/01/20 11:37 AM
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Being from South Texas I have run into the same problem. One thing my dad did that may help is plumb in a use tank where the air infeeds from the bottom and you draw air from the top. Also include a drain valve, then put an air dryer between the use tank and your hose. Make sure to use a big tank to allow the water to separate, my dad used an old 3000 gallon propane tank.


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Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5391260 04/01/20 07:42 PM
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motor_oil_madman Offline OP
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You guys really drain your tank after every use? Waste of power. That's like the same as running the ac inside your house for 6 minutes straight. Air is air imo, just crack the drain valve once the tank is cooled down.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5391270 04/01/20 07:58 PM
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dave123 Offline
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Is this air hose run right off the tank and it should not be or do you have it plumbed off the tank and how many feet. Is the separator away from the tank.

Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5391276 04/01/20 08:05 PM
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motor_oil_madman Offline OP
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The separator is about 6ft away from the tank connected by a 6ft whip hose lead.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: misty air coming out of air hose even with water separator? [Re: motor_oil_madman] #5391278 04/01/20 08:06 PM
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motor_oil_madman Offline OP
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I could always put it close by the hose reel. That is about 50ft away from the compressor. The compressor is in another room, so that's why their is a big distance.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

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