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:
Quote from: Joe Brancato on February 09, 2016, 09:57:20 AMI 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: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.
Quote from: BigTinBoat on February 09, 2016, 10:09:30 AMQuote from: Joe Brancato on February 09, 2016, 09:57:20 AMI 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: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.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.......
Is that when you lost your mind and thought you could make a living selling air guns?
I thought it was kinda funny how the guy selling the Chinese compressors remarked that this post was pretty much an "advertisement" and to basically not put much faith in it, but then there is a guy who has performed countless "upgrades" to one of "his" compressors and when looking at those posts I found a pic of "his" air dryer after apparently little use at all. Here is the of the inside of dryer. Look at the metal where it was "protected by the threads, and then look at the metal where the desiccant was in DIRECT CONTACT with it. Here is a pic AFTER the corrosion has been cleanedI wonder how many guys with these compressors are checking this?
I tried to explain this on another forum where folks were touting a filter that is sold for less than your alpha and it is simply media in an aluminum tube. Unfortunately, I was blasted as a shill and was told I was fear mongering. Kudos for trying to educate folks, but until someone is seriously injured using that specific filter, it seems it will fall on deaf ears.PCP's are not a cheap endeavor and unfortunately, people are cheaping out and I fear someone is going to be hurt.
Re: Chinese High Side Filter Dryer Hack« Reply #87 on: July 23, 2017, 01:01:43 PM »QuoteModifyI have been doing a lot of research about molecular sieve lately. Initially it was concerning the different pore sizes and what worked best at removing only water. While I was gathering information I read on a forum and saw a video from a professional in the business that molecular sieve produces acid when it interacts with water. From what I have found so far this is not entirely true. The only instance that I have found so far where acid is created is the interaction of molecular sieve and polyolester oils used in refrigeration systems. This does not apply to hpa compressors.I have also read that carbonic acid is formed in molecular sieve and water. I have not found any scientific confirmation of this yet. But I did research how carbonic acid would affect aluminum. It doesn't. http://alcancylinders.com/aluminium-cylinders-vs-steel-cylinders/ Quote2) Aluminium cylinders, on the other hand, are not affected by carbonic acid, and no corrosion will occur.Carbon dioxide gas reacts with water to form carbonic acid. According to the ASM( American Society for Metals) Metals Handbook (1, 2, 3), aluminium and brass are not attackedby carbonic acid, but steel will corrode. I also found that when water contacts molecular sieve it causes an exothermic reaction. Heat is created. https://dftechniek.wordpress.com/2017/06/06/reaction-of-molecular-sieves-with-100-water/ I don't know how much heat is created but as we all know air expands when heated. If 4500 psi air were heated that would cause a catastrophic over pressure condition and someone could get hurt. Since I am talking about safety, I recently contacted Airguns of Arizona to see if the Diablo filter they sell had a pressure certification. They responded that the Diablo filter had been tested by Raptor Pneumatics and the burst pressure was 16,200 PSI. the certificate is available from Raptop Pneumatics.So like I stated earlier I have just started collecting information and I'd like to share it with forum members. I have nothing conclusive but I hope we can share information we have found to make better plans in water removal.Thank you,Taso
Re: Chinese High Side Filter Dryer Hack« Reply #88 on: July 23, 2017, 01:12:52 PM »QuoteModifyI forgot to add. I did find that molecular sieve itself is acidic.Also I think keeping the cartridge is a good idea for many reasons regardless of acid creation or not. First it is convenient and faster to replace a cartridge. This exposes the media less to air while handling so its capacity isn't used up by filling the filter. Also it keeps the media contained so dust and particles don't get everywhere.It would be nice to be able to regenerate the media while in a cartridge but I don't think the plastics will survive 500 degrees. Maybe the sieve could be regenerated at 250 degrees but for a longer period of time?Thanks,Taso