co2 bubble counter & double check valve
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Old 05-02-2013, 03:00 PM   #1
gnod
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co2 bubble counter & double check valve


so i bought one recently and just got it yesterday. and i installed it to my co2 tank but noticed this morning that there was less water in the bubble counter than i originally put into it.

upon inspection, i saw that water had escaped past the check valve and was halfway to the co2 tank. if it wasn't for the loop i made, it would've likely reached my co2 tank.

is this normal? this is the first time it's happened to me and i'm wondering if i've done something wrong..
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Old 05-02-2013, 03:45 PM   #2
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Are you using the metal or plastic check valve?
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Old 05-02-2013, 08:00 PM   #3
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it's this one which i believe is plastic:
Amazon.com: D-499 Aquarium CO2 Bubble Counter with Double Check Valve: Pet Supplies Amazon.com: D-499 Aquarium CO2 Bubble Counter with Double Check Valve: Pet Supplies

i have the same one on my other regulator and that one's fine
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Old 05-02-2013, 08:06 PM   #4
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you won't have to look far to see that it's a pretty unanimous opinion to backup the "integrated" check valve on bubble counters with a high-quality check valve just below it. it's certainly what I do.

consider it a $5 insurance policy on your >$100 in equipment (needle valve, solenoid, regulator...)
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Old 05-02-2013, 08:07 PM   #5
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^ got any suggestions for a HQ valve?
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Old 05-02-2013, 08:20 PM   #6
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something like this:


Amazon.com: Como Aquarium Non-return Metal Air Pump Check Valve Silver Tone: Pet Supplies Amazon.com: Como Aquarium Non-return Metal Air Pump Check Valve Silver Tone: Pet Supplies
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Old 05-02-2013, 08:30 PM   #7
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this Fabco one is the one I use, but I don't expect you'd want to pay for shipping for a single check valve.

the one linked to above is good, too...

what you don't want is
this pos this pos
, or
this this
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Old 05-02-2013, 08:51 PM   #8
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I bought the metal ones from an ebay seller in HK.

I have the solenoid on a timer and when I came back to work the next day the water was almost up and over the loop.

Could it be leaking from the barb fitting if so how would you ensure a tighter seal, the tubing is for co2 usage.
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Old 05-02-2013, 09:07 PM   #9
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Lesson learned, no plastic cv on a pressurized system, I think that was overpriced too for what u got . You can get metal cv for 4-5 bucks. Put 2 if you want to have a good sleep at night.

Quote:
Originally Posted by gnod View Post
it's this one which i believe is plastic: Amazon.com: D-499 Aquarium CO2 Bubble Counter with Double Check Valve: Pet Supplies

i have the same one on my other regulator and that one's fine
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