Do you need an air filter?

Do you need an air filter (dryer) for occasional use oil-less vertical air compressor?

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Hello mhood9816, welcome.

Let's first differentiate between compressed air filters and compressed air dryers.

This site has a page of information on compressed air filters and another on compressed air dryers, to help.

The basic answer to your question is... what are you doing with the compressed air? If whatever you are doing doesn't mind having water condense inside it from the flowing compressed air, or even free water entering the application along with the compressed air, then no, I guess you don't need a filter.

Make sure you drain your compressor air tank and if you are using the intermittent air in an air tool, to lubricate the tool after every use as well.

Cheers,

Bill

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Containing compressed air after it is used

by Patty
(Wisconsin)

My husband uses a compressed air gun for removing chips and debris from his work surface. Is there a system, a filter, or some means to capture the dust and slowing the velocity of to air on the back side of the applicatiobn so he does not send dust everywhere?
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Hey Patty:

I share your pain! :-)

If you are using a blow gun for chip clearing, then the chips and dust will fly wherever they want, depending on the velocity of the air from the blow gun, and the direction of air-to-chip impact.

Yup, it makes a mess. Typically you blow the crud to the floor, and then clean up the floor after the equipment is clean.

If your husband wanted to cut down that flying debris cloud, I've two suggestions.

1) Invest in a shop vac, and use that to vacuum the dust and chips instead of blowing them away.

2) Use compressed air to run a venturi vacuum device that, with compressed air blowing through it, actually sucks in dust and chips and deposits them into a barrel or container, through a hose. That barrel or container would need a filtered air exhaust to let the air back out and to keep exhaust dust trapped.

You'll find buying the el-cheapo shop vac at the local big box store a less expensive option that will require no particular technical skills to build and to operate.

Hope this helps. Have a good day!

Bill

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FDA Requirements for Compressed Air

by Jeff Deming
(Boyne City, MI)

I work for a Chocolate and Confectionary organization which utilizes a SpeedAire compressors for a shaker table, coin stamping machine, hillards, melters, and some other minor equipment.

We don’t know of any know requirements for air quality from the FDA but we do know that the FDA would not want industrial oils on any food products.

Therefore, we are wondering how we would test our current compressor to make sure no containment could make it to any food. Additionally, maybe there is an FDA oil which would eliminate any concern for this compressor.
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Hello Jeff.

If your compressor is oil lubricated then you can be certain that compressor oil is discharging from your compressor along with the air. If that air is blowing on the food product, then you are contaminating it with compressor oil.

Compressor oil is not edible.

It's the same issue that dentists face. To purchase a true "dental compressor" is often perceived as hugely expensive when a DIY type compressor sells for a few hundred dollars. If they use the DIY compressor and don't properly treat the air, then the dentist is spraying compressor oil into their patient's mouth as they work.

The amount of oil will vary depending on the age and condition of the compressor, yet every oil lubed compressor will add oil to the compressed air stream.

However, a coalescent filter can be used to rid the air stream of oil. See the page on coalescent filters on this site for more info.

As to the FDA compressor oil, you would have to check with the compressor manufacturer. I don't know of any myself.

Good luck.

Bill
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Jun 24, 2011
Food Grade Oils
by: Anonymous

Although you would want to minimize direct product contact.

There is Food Grade compressor and vacuum pump oil.

Contact Busch Vacuum Pumps.

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Replace a seperator/drain

Need the internals, including Bronze element, drain assembly and gaskets.

OR

A complete replacement seperator/drain assembly.
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Hello and thanks for writing in.

Check out the page about compressed air filters on this site for details to help you out.

If you can't locate the exact one you are looking for (check the Speedaire page for help in locating your nearest Grainger parts store) then you can purchase and substitute another filter of comparable size and flow with no negative impact on the operation of your air system.

Cheers,

Bill

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