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Old 03-31-2011, 08:01 AM   #1
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Sep 2009
Linden, NJ
Posts: 352
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I have a technical question about a coke C02 dual regulator for a soda installation (bag in box). This is the regulator:

Are there any differences in the regulators despite the color and the larger "out" connector on the red regulator? I read both stickers on the regulators themselves. The grey regulator has a max psi rating of 65psig which I assume is for the soda syrup while the red regulator has a max psi of 105 psig which I assume is for the carbonator. Now let's say I hook them up backwards and put the syrup to the 105 psig (red) regulator and vice versa what will happen? Will the 65 max psig regulator just let in pressure to 65 Psig then stop or back purge or will it go above? Can anyone tell me if there's an actual difference in the regulators? Is it safe to operate the 65 psig regulator with pressure exceeding 100 psig? Also can anyone tell me what purpose these 2 screws serve? Thanks.

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Old 03-31-2011, 12:01 PM   #2
Feb 2009
Posts: 1,786
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I really have no idea on that one. Hey, open up the paper in the picture and see if it helps out! It doesn't appear that there are any check valves on them so don't hook them up backwards.

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Old 03-31-2011, 12:17 PM   #3
Oct 2008
Posts: 477
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Originally Posted by redalert View Post
Also can anyone tell me what purpose these 2 screws serve?
I'm guessing they're for pressure relief. When you turn the pressure gauge down, it probably bleeds off pressure there to the new setting.
I like a little more beer in my beer.

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