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Author Topic: Fixing an air compressor tank  (Read 1204 times)

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Offline Jeff

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Fixing an air compressor tank
« on: January 18, 2022, 09:06:23 PM »
Yea, I know...
So I got this compressor in the Soo for 20 bucks to blow out water lines at the cabin.


Just call me the midget doctor.
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Ezekiel 22:30

Offline sawguy21

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Re: Fixing an air compressor tank
« Reply #1 on: January 18, 2022, 10:49:52 PM »
At least you knew when to stop and cut your losses. ;D Compressed air is nothing to mess with.
old age and treachery will always overcome youth and enthusiasm

Offline mike_belben

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Re: Fixing an air compressor tank
« Reply #2 on: January 19, 2022, 03:54:07 AM »
I made a dual fuel outdoor boiler this week out of a discarded harbor freight compressor, old 20lb propane tank and a piece of rusty diamond plate.  
Revelation 13:11-18

Offline Raider Bill

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Re: Fixing an air compressor tank
« Reply #3 on: January 19, 2022, 07:58:19 AM »
stop by jeff i have a 30 gallon i'll give you.
The First 69 years of childhood is always the hardest.

Offline Jeff

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Re: Fixing an air compressor tank
« Reply #4 on: January 19, 2022, 08:17:57 AM »
You going to be home around lunch time.?  ;) 
Just call me the midget doctor.
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Offline Hilltop366

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Re: Fixing an air compressor tank
« Reply #5 on: January 19, 2022, 08:33:21 AM »
A rust hole that leaks....not so bad, a tank that fails all at once.....not to good.

I know a guy that decided to use a water tank for his homemade compressor, it failed and busted the windows and doors in his garage!

Offline Jeff

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Re: Fixing an air compressor tank
« Reply #6 on: January 19, 2022, 09:18:55 AM »
My concern with this mostly was that when I would weld, the leaks would appear not on the weld, but pourous leaks would appear on the old metal side. I pumped it up to 120lbs a couple times under the welding blanket but felt it probably was not something I'd want to encourage anyone else less cautious to do  so left it out of the video. My fear was after several compression cycles my welding wouldn't fail, but the old metal would.  To much heating cooling and unknown corrosion.  
Just call me the midget doctor.
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Ezekiel 22:30

Offline newoodguy78

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Re: Fixing an air compressor tank
« Reply #7 on: January 19, 2022, 09:28:11 AM »
Most likely a wise decision. 

Offline Jeff

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Re: Fixing an air compressor tank
« Reply #8 on: January 19, 2022, 09:34:03 AM »
I worked on the video as I worked on the compressor. I had more time in the video than the compressor by the time I figured out this just was not a good idea, so decided to turn what I had into a cautionary tale.
Just call me the midget doctor.
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Commercial circle sawmill sawyer in a past life.
Ezekiel 22:30

Offline btulloh

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Re: Fixing an air compressor tank
« Reply #9 on: January 19, 2022, 09:34:05 AM »
Welding certification for pressure vessels is a tough ticket. Re-welding rusty tanks is strictly no bueno.  

Offline WDH

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Re: Fixing an air compressor tank
« Reply #10 on: January 19, 2022, 09:41:43 AM »
Right after Christmas a man that I know was spraying paint with low pressure from a homemade tank.  Pressure gauge apparently no good.  Sprayer began leaking paint.   He leaned over to look at gauge, tank blew up in his face killing him instantly.  Tank over-pressurized.  Grandkids playing in yard, whole family there, two sons helping, very bad scene.  
Woodmizer LT40HDD35, John Deere 2155, Kubota M5-111, Kubota L2501, Nyle L53 Dehumidification Kiln, and a passion for all things with leafs, twigs, and bark.  hamsleyhardwood.com

Offline bannerd

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Re: Fixing an air compressor tank
« Reply #11 on: January 19, 2022, 09:56:15 AM »
The old champions use to separate the air/water right from the high side of the compressor head.  No water in the tank will save it I suppose.

Offline sawguy21

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Re: Fixing an air compressor tank
« Reply #12 on: January 19, 2022, 11:55:46 AM »
The air will never be completely water free. The separator will take the free water but as the air cools more will condense in the tank. The dryer will be more effective downstream and regularly draining the tank is critical.
old age and treachery will always overcome youth and enthusiasm

Offline newoodguy78

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Re: Fixing an air compressor tank
« Reply #13 on: January 19, 2022, 01:06:41 PM »
I used to drain my compressor at the end of every day when doing carpentry. Itís incredible the amount of water that accumulates in a day. Not only is it bad for the tank never cared for all that moisture going through my tools either. 

Offline Jeff

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Re: Fixing an air compressor tank
« Reply #14 on: January 19, 2022, 02:23:16 PM »
I was well versed in the importance of bleeding off water and keeping air dry. The first sawmill I ran was a Renco cicle mill. 100hp headsaw, 75hp 3 blade vertical edger, 3 headblock carriage and wait for it...

Air powered dogs.

Think winter, think 175hp power sawing  through a log, think sudden loss of anything holding that log down....
Just call me the midget doctor.
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Ezekiel 22:30

Online thecfarm

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Re: Fixing an air compressor tank
« Reply #15 on: January 19, 2022, 04:23:35 PM »
It's all a learning experience.
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Offline Walnut Beast

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Re: Fixing an air compressor tank
« Reply #16 on: January 19, 2022, 05:29:21 PM »
Welding certification for pressure vessels is a tough ticket. Re-welding rusty tanks is strictly no bueno.  
You got that right!!! 

Offline Al_Smith

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Re: Fixing an air compressor tank
« Reply #17 on: January 28, 2022, 08:36:38 PM »
The one I have in my garage ,3HP single stage has been a good one .I've owned it over30 years but it's got a leaky tank .It just so happens I have another tank but it's cold out so it will be next spring before I get around to it .I've cut the pressure back to 60-70 psi in the mean time .The tanks on those inexpensive units are thin .The ones with wheels usually rust out where the axle bracket  mounts to the tank .The danged things are too thin to arc weld so it would take either a wire welder or gas otherwise you'd burn right through it . 

Offline Al_Smith

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Re: Fixing an air compressor tank
« Reply #18 on: January 29, 2022, 07:30:17 AM »
I'm the king of the the half-fast fixes but I'll tell you what will work because I've done it .If you just want to blow a tire up bypass the tank and tee in the relief valve on the compressor discharge and use a clip on air chuck .It might take a long time to blow up a tractor tire but it will work .It's a lot better option than a hand pump .For that matter you could hose in a portable air tank if nothing else and run off the pressure switch .Just tee in a quick connect in the compressor discharge line ,good to go .--chicken wire ,bubble gum and duct tape . :D You aren't out much ,what the hey a motor and compressor for 20 bucks, cheap at half the price .

Offline Jeff

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Re: Fixing an air compressor tank
« Reply #19 on: January 29, 2022, 07:32:35 AM »
What I needed it for was blowing out water lines in the cabin.
Just call me the midget doctor.
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Commercial circle sawmill sawyer in a past life.
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