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Old 07-16-2014, 07:08 PM   #21
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I believe you can also unscrew the first body so nothing flows and still have the second set. If anyone has a dual I'm curious now and like a confirm.
Yes, you can definitely do that.

The pressure setting of first body has no effect on the pressure supplying the second body. To prove this, just look at how a single body regulator with dual gauges works. No matter what the regulated pressure is set to, the high pressure gauge is going to read the tank pressure (~500 psi). A dual body regulator is just two single body regulators connected to each other with the inlet for the second body attached to the high-pressure outlet of the first body. Regardless of what the first body is set to, there will still be ~500 psi leaving it and going into the second body.
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Old 07-16-2014, 07:16 PM   #22
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I believe you can also unscrew the first body so nothing flows and still have the second set. If anyone has a dual I'm curious now and like a confirm.
You can definitely separate them (just be careful you unscrew them correctly, they're LH thread). However, if you don't replace the high pressure gauge (or plug the hole), you're going to have an open vent at tank pressure (~1500 psi). That would be bad news if you opened the valve on the tank. Personally, I wouldn't mess with it.

Edit: Or are you talking about just setting one of the regulators to 0 psi? That you can do easily enough. Just make sure you shut off the valve as well or gas can slowly bleed through the check valve and depressurize your keg.
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Old 07-16-2014, 07:21 PM   #23
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Edit: Or are you talking about just setting one of the regulators to 0 psi? That you can do easily enough. Just make sure you shut off the valve as well or gas can slowly bleed through the check valve and depressurize your keg.
This is what I assumed he was referring to.
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Old 07-16-2014, 07:40 PM   #24
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This is what I assumed he was referring to.
Ya out all the way so zero psi.
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Old 07-16-2014, 11:14 PM   #25
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I think that is the case with those dual body regulators, i.e. that they both receive high pressure, as opposed to the secondary regulators that you buy for downstream. At any rate, you can test it and see.

Yesfan, sounds like you have a regulator with a built in o-ring, I have one too. You don't need a nylon washer with those.

Jason at AiH also confirmed this.


Wow, love this sight! You ask for help and you get it in spades! Thanks gang for the info. I appreciate it!
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