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SAFETY NOTICE: Molecular Seive used in Aluminum Cylinders

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Joe Brancato:
I post this as Safety Notice.   I am reading in more than one instance where people are putting molecular seive into a bare aluminum housing for the purpose of filtration.  This isn't just happening with filters, but now I see it being done with a particular compressor that has come to market. 
This is wrong on so many levels, SAFETY & FUNCTION:

Please, don't mention particular brands. This is NOT about any particular product (Fllter or compressor). This IS about why not to loosely put molecular sieve into a filter tube (or similar). 

To save time, I copied, edited to remove any brand information, and pasted this:

Function:
1) Moisture serparation works best at High Pressure. When filling a tank with an inline filter, ensure the filter has some kind of the proper valving mechanism to allow the pressure to build up (this changes the dew point), prior to flow through the filter. The pressure needs to be held back up inside the filter to a point, and then allowed to flow through the filter media.   Also the filter media needs a "dwell time" as well as high pressure to work best. Simply running air through a cylinder with a filter element doesn't work well, and using loose packed beads doesn't work at all. Make sure the filter has the proper valving to allow pressure to build up before the air runs through it.

2)  Filters require a place to let out the condensate.  All filters have a condensate drain.   If the filter is working, it should be collecting moisture and it needs to be let out immediately.  Letting the condensate sit in the filter allows the moisture to saturate the filter media, rendering it useless in no time.
 
3) One can't just pack beads in a cylinder for 2 VERY important reasons.
A) It doesn't work because of "Channeling" :  We'd all like to just make a filter that uses cheap beads packed in a cylinder, but the first issue is that without proper packing, "channeling" will occur between the media. Simply put, channeling is the situation where air just goes around the individual filter "beads" instead of being "scrubbed". In order to work, the media need to be properly "jam packed" into the a container element, and this filter element put in a filter tube. Filter elements are manufactured to be "jam packed". Putting the media into a tube doesn't pack it tight enough to prevent channeling at high pressures.  Replacement filter elements are inexpensive, so it isn't an issue.

B) Most importantly SAFETY.   NEVER make a high pressure filter where the filter material directly touches the cylinder walls of a high pressure filter. This is filter element 101. The moisture in filter media leaches acid, and hence must not come in direct contact with the filter tube. Acid that leaches out will eventually make it to the walls of the vessle and threads on the end-caps of the filter, weakening them, and eventually causing the high possibility of catastrophic failure. This point can't be stressed enough. 
 
Points A) & B) are why every high pressure filter uses media that is jam-packed into either a plastic or stainless steel sleeve. So it works, and works SAFELY!
 
We would rather see you use no filter at all, and ruin an airgun, that use an unsafe product, and risk the dangers of doing so.

BigTinBoat:

--- Quote from: Joe Brancato on February 09, 2016, 09:57:20 AM ---I post this as Safety Notice.   I am reading in more than one instance where people are putting molecular seive into a bare aluminum housing for the purpose of filtration.  This isn't just happening with filters, but now I see it being done with a particular compressor that has come to market. 
This is wrong on so many levels, SAFETY & FUNCTION:

--- End quote ---

As long as we are talking about safety using compressors, If you are using an electric driven compressor and your 20amp circuit breaker keeps tripping, don't just go out and spend $10 to purchase a 30amp breaker and replace it.....no matter WHAT #'s are written on your breaker panel.
When houses are built the breakers are size appropriate for the wiring on each of the circuits according to building codes, and are inspected prior to occupancy. Overloading a circuit via the increase in breaker amperage has a GREAT risk of FIRE.

Joe Brancato:

--- Quote from: BigTinBoat on February 09, 2016, 10:09:30 AM ---
--- Quote from: Joe Brancato on February 09, 2016, 09:57:20 AM ---I post this as Safety Notice.   I am reading in more than one instance where people are putting molecular seive into a bare aluminum housing for the purpose of filtration.  This isn't just happening with filters, but now I see it being done with a particular compressor that has come to market. 
This is wrong on so many levels, SAFETY & FUNCTION:

--- End quote ---

As long as we are talking about safety using compressors, If you are using an electric driven compressor and your 20amp circuit breaker keeps tripping, don't just go out and spend $10 to purchase a 30amp breaker and replace it.....no matter WHAT #'s are written on your breaker panel.
When houses are built the breakers are size appropriate for the wiring on each of the circuits according to building codes, and are inspected prior to occupancy. Overloading a circuit via the increase in breaker amperage has a GREAT risk of FIRE.

--- End quote ---

Yes, as a former Engineer/Physicist that worked in a Lightning Simulation Laboratory utilizing hundreds of thousands of Amps, and millions of volts, swapping for a larger breaker,  without upgrading the wiring is rather disconcerting.  But then, the stuff we used to do in that lab.......

mobilemail:

--- Quote from: Joe Brancato on February 09, 2016, 11:10:16 AM ---
--- Quote from: BigTinBoat on February 09, 2016, 10:09:30 AM ---
--- Quote from: Joe Brancato on February 09, 2016, 09:57:20 AM ---I post this as Safety Notice.   I am reading in more than one instance where people are putting molecular seive into a bare aluminum housing for the purpose of filtration.  This isn't just happening with filters, but now I see it being done with a particular compressor that has come to market. 
This is wrong on so many levels, SAFETY & FUNCTION:

--- End quote ---

As long as we are talking about safety using compressors, If you are using an electric driven compressor and your 20amp circuit breaker keeps tripping, don't just go out and spend $10 to purchase a 30amp breaker and replace it.....no matter WHAT #'s are written on your breaker panel.
When houses are built the breakers are size appropriate for the wiring on each of the circuits according to building codes, and are inspected prior to occupancy. Overloading a circuit via the increase in breaker amperage has a GREAT risk of FIRE.

--- End quote ---

Yes, as a former Engineer/Physicist that worked in a Lightning Simulation Laboratory utilizing hundreds of thousands of Amps, and millions of volts, swapping for a larger breaker,  without upgrading the wiring is rather disconcerting.  But then, the stuff we used to do in that lab.......

--- End quote ---

Is that when you lost your mind and thought you could make a living selling air guns?   :)

Joe Brancato:

--- Quote from: mobilemail on February 09, 2016, 05:04:32 PM ---Is that when you lost your mind and thought you could make a living selling air guns?   :)

--- End quote ---

Yes, I discovered how to quite easily make a small fortune in airguns.  Start with a LARGE fortune,... and invest in airguns.  :-)

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