Attaching something to a compressor tank. - Woodworking Talk - Woodworkers Forum
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post #1 of 16 Old 10-17-2019, 02:30 PM Thread Starter
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Attaching something to a compressor tank.

I'm planning to attach a transmission cooler to my compressor as an aftercooler to cool the air before it goes into the tank. The easiest place to put it is on the tank itself. I was thinking about putting a ban around the tank, but I'm guessing that the tank expands a little bit when it fills, which will expand the band, causing it not to fit when the tanks contracts. Does this seem right? Any other ideas for making an attachment point on the tank?
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post #2 of 16 Old 10-17-2019, 02:33 PM
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use the generic orange nylon ratchet straps - it flexes quite a bit.
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post #3 of 16 Old 10-17-2019, 03:12 PM
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I highly doubt that the tank would expand enough to give a permanent stretch to a band.


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post #4 of 16 Old 10-17-2019, 03:51 PM
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If the tank expanded enough to break they strap, the welds that hold the compressor mount would have cracked long ago
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post #5 of 16 Old 10-17-2019, 04:29 PM
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It would greatly increase efficiency of the intercooler if you can attach it to the cylinder head cooling fan using the fan to move air through the intercooler. The inlet temp on my intercooler averages 237f the outlet to the tank is room temp. Also you need a method to collect the moisture that the intercooler condenses out of the airstream. A pre-tank centrifugal separator or quality micron water filter that is drained regularly.

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post #6 of 16 Old 10-17-2019, 04:34 PM
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Actually. I wouldn't attach anything to the tank. As the compressor runs, it produces vibrations. Anything attached to the tank would rub on the tank creating a weak spot.

As for the cooler. . . . .
If the compressor is stationary, attach the cooler to the wall, etc.

If the compressor is moved frequently, build a cart for the compressor and put the cooler on the cart.

All:
SCUBA tanks are tested and certified by measuring the amount of expansion between empty and full. (A measuring tape around the circumference.) Although we don't do that for compressors in home settings, OSHA probably has some rules for compressors used in industrial settings.

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post #7 of 16 Old 10-17-2019, 06:03 PM
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What pressure are scuba tanks? 2or3000 PSI compressor tank 175 at the most 135 for single stage


About the only thing OSHA looks for is guards in place, and PVC piping, you can use no PVC legally, with age it becomes brittle and it can shatter, has killed quite a few people over the years
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post #8 of 16 Old 10-17-2019, 09:36 PM
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Is there a belt guard on your compressor?

I attached mine to the outside of the belt guard so the air is pulled through it to cool it.

You need some air flow across that cooler.

And you need a drop leg to keep the moisture out of the tank.
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post #9 of 16 Old 10-17-2019, 09:53 PM Thread Starter
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Here’s a sketch of my planned design. I plan to use an electric fan on the cooler. Getting the cooler in the path of the pump fan is too much trouble. I’ve just got to figure out how to mount the cooler.

Making it stand alone is probably a good idea. It might be nice to connect it with hoses both to make it portable and reduce the effects of vibration.

Is there hose that can handle the heat from the pump and the air pressure as well?
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post #10 of 16 Old 10-18-2019, 11:42 AM
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Get a hydraulic hose that would hold it

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post #11 of 16 Old 10-18-2019, 12:12 PM Thread Starter
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Quote:
Originally Posted by Catpower View Post
Get a hydraulic hose that would hold it
Would hydraulic hose take the heat? The air coming out of the compressor appears to be well over 200 degrees (water readily boils on the tube).
I sure don't need molten rubber getting into my air!

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post #12 of 16 Old 10-18-2019, 04:10 PM
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Quote:
Originally Posted by Quickstep View Post
Would hydraulic hose take the heat? The air coming out of the compressor appears to be well over 200 degrees (water readily boils on the tube).
I sure don't need molten rubber getting into my air!

Yeah it will handle it, there are hydraulic systems that don't have inter coolers and the fluid gets a lot higher then 212


Another hose you could use is a 3/8 refrigeration manifold hose, but most of the online outlets only sell them as a set so you would get 3 1/4 hoses with the 3/8 and probably run about $100+ for good ones

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post #13 of 16 Old 10-18-2019, 11:38 PM
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Catpower,
When I filled tanks with liquid chlorine (Cl2) the cylinders had to be tested every 5 years. The operating pressure was significantly less than 150 pounds. The cylinders were tested by the expansion method and measuring the circumference. I do not know what pressure they were tested to.

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post #14 of 16 Old 10-19-2019, 03:30 PM
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Quote:
Originally Posted by NoThankyou View Post
Catpower,
When I filled tanks with liquid chlorine (Cl2) the cylinders had to be tested every 5 years. The operating pressure was significantly less than 150 pounds. The cylinders were tested by the expansion method and measuring the circumference. I do not know what pressure they were tested to.

They may stretch some but I don't think it will be enough to break a strap mounting them but maybe it will


Most hydro tests are 4 times the expected pressure the tank will experience, at least that is what I was told, might be different for different products, because if it was true an oxygen tank would need to be run up to about 8000 PSI

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post #15 of 16 Old 10-19-2019, 03:53 PM
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Quote:
Originally Posted by Catpower View Post
oxygen tank would need to be run up to about 8000 PSI
As would a SCUBA tank. I never knew the four times figure.

In my youth, I was offered a SCUBA tank and regulator. Nobody would fill it because of the testing date was beyond what was allowed.

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post #16 of 16 Old 10-20-2019, 04:46 PM
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Four times seems a bit high, most hydraulic tests are only 50% higher according to Wikipedia:
https://en.wikipedia.org/wiki/Pressure_vessel

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