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Air compressor tank testing


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  #1  
Old 12-12-2008, 11:44:00 AM
Tom Kilgore Tom Kilgore is offline
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Default Air compressor tank testing

how would I test a air compressor tank,concerned by inside rusting, unit is about 30 years old, large compressor with 15hp wisconsin engine? I have ran it up to 120lb no leaks. would like to run it a 150 to 180 lb. should I be concerned,just trying to be safe,any comments. does anyone do this? THANKS TOM
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Old 12-12-2008, 12:35:16 PM
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Ken Majeski Ken Majeski is offline
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Default Re: air compressor tank testing

Yes... You Should be concerned... What pressure was the tank originally rated for...??? Does it have a Rating Tag or ASME Stamp on it...???

I would UT it myself and look for thin spots... If you don't have a UT you could borrow one from a steam guy... Compare readings from on the top to areas on the bottom so see how much it has wasted where condensation has stood... Calculations can be done on tanks to find out their Safe MAWP... Same as on a steam boiler...
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Old 12-12-2008, 05:41:18 PM
Tom Kilgore Tom Kilgore is offline
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Default Re: Air compressor tank testing

ANYONE IN ALABAMA WITH A UT FOR TESTING STEAM ENGINE
THICKNESS, OR ANOTHER WAY TO TEST A AIR COMPRESSOR TANK THANKS TOM
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Old 12-13-2008, 11:20:27 PM
Ray Freeman Ray Freeman is offline
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Default Re: Air compressor tank testing

You can try filling it with water and pressurising to 50 % greater than its rating.Tap it all around with a hammer. If it lets go you will only get a squirt of water.If it lets go full of air you got a bomb so make sure its full.
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Old 12-14-2008, 03:10:54 PM
JHoward JHoward is offline
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Default Re: Air compressor tank testing

Hey Tom , Ray is right . Fill it up with water (completely full ) and then use a common pressure washer to provide the pressure .

Use a good quality valve to bleed the pressure into the tank slowly so as not to overpressure .

Don't pressure test in the direct rays of the sun ( will cause the pressure to rise in the vessel being tested ) and let it set under pressure for a couple of hours at least.

We have tested gas piping @1950 psi with a small, pressure washer rig .

Jhoward
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