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sandeep lokhande
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Aluminium Piping

11/13/2010 1:53 PM

Dear All,

We are using aluminium piping in our spice conveying system.

Why not Stainless steel or flexible Piping?

Regards.

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Tornado
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#1

Re: Aluminium Piping

11/13/2010 2:16 PM

We don't know; we didn't make that decision.

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Hendrik
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#2

Re: Aluminium Piping

11/13/2010 2:28 PM

SS 316 is used in the fishing industry to absorb odors. it could absorb the odors of the spices as well. Maybe anodized aluminium does not.

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Jaguar
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#3

Re: Aluminium Piping

11/13/2010 11:40 PM

This year, I grew five types of hot peppers. In researching how to process them, I repeatedly came across advice to use nonreactive (stainless) cookware because the chemicals in the peppers can react with aluminum and copper, even when the peppers are being dried and ground. I'm sure most spices do not present that problem and aluminum is cheaper and able to be maintained at the cleanliness levels required by the Food and Drug authorities.

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philponkamecheng
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#4

Re: Aluminium Piping

11/14/2010 12:11 AM

Hiya

Depending on the type of spice, it would have a certain deflagration index. There is a risk of a dust explosion. Airborne dusts of all types can explode. (examples include sugar, flour, cellulose fibres)

Aluminum is a good electrical conductor (better than stainless), so it would be good for dissipation of static electricity. Make sure everything is grounded !

Maybe check out 'NFPA 654' for some better guidance.

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Phil Ponka

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kevinm
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#7
In reply to #4

Re: Aluminium Piping

11/14/2010 3:37 PM

GA and welcome to CR4. When I worked for Dupont many years ago, all the resin rail cars were unloaded with Al piping for the same reason. Static charges can be very large.

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sandeep lokhande
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#11
In reply to #4

Re: Aluminium Piping

11/15/2010 12:32 PM

Is it mean during conveying time it will create some short of electric current?

What is deflagration Index?

Will it cause attraction of dust on pipes?

What is NFPA 654?

I will check on wikipedia but explain me regarding this subject.

Thanking you all.

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jcarter817
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#5

Re: Aluminium Piping

11/14/2010 1:27 AM

Why not stainless? Stainless is VERY expensive. Stainless will not react to the acids in some spices. Test before deciding. The company who designed and is going to install the conveying system will test this for you if they are reputable. If you have unlimited money, use stainless because it is prettier. Most people use aluminum because of lower cost & also because of lower weight. Flex is another alternative, although flex is ugly and looks unprofessional. I know a client, though who predominantly uses flex throughout the food processing facility. Ultimately, the person in charge will decide what to use.

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Garthh
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#6
In reply to #5

Re: Aluminium Piping

11/14/2010 12:05 PM

flex is also more expensive to install & maintain than aluminum

the receiving hoppers are usually stainless on air powered conveyors
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#8

Re: Aluminium Piping

11/14/2010 4:56 PM

Could PVC be used?

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ky
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#10
In reply to #8

Re: Aluminium Piping

11/15/2010 12:45 AM

I tend to agree but would use this PET

http://en.wikipedia.org/wiki/Polyethylene_terephthalate

Electrostatics would have to be avoided. Dust explosions with white pepper? maybe steel is better.

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#9

Re: Aluminium Piping

11/14/2010 5:51 PM

Aluminum is non-sparking besides being cheap and flexible.

If anodized it is fairly impervious to alkalies and light acids in foods and spices

As noted, stainless is factors (typically 5) times more expensive
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Anonymous Poster (1); Garthh (1); Hendrik (1); Jaguar (1); jcarter817 (1); kevinm (1); ky (1); philponkamecheng (1); ronseto (1); sandeep lokhande (1); Tornado (1)

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