05-23-2007, 04:04 PM
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Senior Member
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Join Date: Oct 2006
Location: , , Canada.
Posts: 109
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Glycol
I'm 99% certian I know the answer to this, but I want to ask....
Is there any difference between the pink, clear, or blue glycol? Can you mix them?
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05-24-2007, 04:04 AM
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Super Moderator
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Join Date: Mar 2006
Location: York, PA. , USA.
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As long as they are all propylene glycol, and not ethylene glycol, they should be the same. Just my opinion, but I think you would have no problem mixing them. Tapman
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05-24-2007, 06:19 PM
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Senior Member
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Join Date: Jan 2006
Location: Plains,PA , USA.
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Steve,
It's my understanding that food grade propylene glycol is rated by the amount of fly ash that is in it. Regular propylene has more fly ash. If the existing glycol is in fact food grade and your putting in food grade, shouldn't be a problem. Also, I really don't understand the need for food grade, you would need a leak in the glycol line, and a leak in the beer line near the same spot for it to ever come in contact with each other. Maybe someone else would like to enlighten us?
Vern
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05-26-2007, 05:50 AM
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Senior Member
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Join Date: Oct 2006
Location: , , Canada.
Posts: 109
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Thanks guys. I figured such. We have the food grade polypropylene.
Vern, great question.
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05-26-2007, 06:38 AM
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Super Moderator
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Join Date: Mar 2006
Location: York, PA. , USA.
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I think that the food grade is a requirement more for liability issues than for effectiveness. Propylene glycol is propylene glycol (basically). Tapman
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05-29-2007, 08:48 PM
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Super Moderator
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Join Date: Mar 2005
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Vern,
A glycol system is considered a food zone. Thus, a food grade antifreeze such as propylene glycol should be utilized. What can go wrong, will go wrong. It is not entirely impossible for glycol to leak into a beer line. Particularly if some goof decided to pound a nail into a wall to hang a piece of POS or picture and ended up puncturing both a glycol line and beer line.
Scott
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