Problem installing CO2 canister - The Planted Tank Forum
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post #1 of 17 (permalink) Old 07-24-2012, 10:23 PM Thread Starter
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Problem installing CO2 canister

Hello all,

I was at Petco the other day and saw an ISTA CO2 disposable supply set and figured I would give it a shot. I know the ease and benefits of a DIY CO2 system, but I wanted to give a pressurized set a shot. I tried to install the 'threaded' canister into the regulator but couldn't seem to tighten enough to puncture the canister. I figured it was faulty and returned it for another set.

Guess what? Same thing, so now I figure I must be doing something wrong. The instructions say I need to thread the canister and then tighten the regulator. I just assumed that means screw the canister in until the seal breaks.

Anyone have any idea what I am doing wrong?
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post #2 of 17 (permalink) Old 07-24-2012, 11:52 PM
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1) Make sure the regulator valve is closed, (knob valve turned fully clockwise)

2)Thread regulator to the CO2 cartridge and hand tighten until the valve pierces the cylinder.

Can you see then point that is supposed to pierce the CO2 cylinder when you look into the bottom of the regulator?

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post #3 of 17 (permalink) Old 07-25-2012, 12:42 AM Thread Starter
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Yeah I can see the point/needle and the canister gets a small indention, but there is no piercing.
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post #4 of 17 (permalink) Old 08-08-2012, 02:20 AM
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Any luck with the CO2 cartridge?
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post #5 of 17 (permalink) Old 08-09-2012, 10:27 PM
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Returning my ISTA 45g CO2. The needle is about 2mm too short to pierce the cartridge cap.

Manufacturing defect? Or just not enough forethought?

Guess they don't do sample testing, otherwise there wouldn't be so many people having the same problem of the needle not piercing the canisters.

Argh!
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post #6 of 17 (permalink) Old 08-13-2012, 05:35 AM
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Having the same problem as we speak. . I even tried with a wrench but it just makes a deeper indentation without piercing. WeK.

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post #7 of 17 (permalink) Old 08-14-2012, 12:43 AM
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Has anyone figured this out? Unfortunately I can't find my receipt...
Looks like I'm sticking with DIY for now.
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post #8 of 17 (permalink) Old 08-16-2012, 11:56 PM Thread Starter
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I tried two different units and both had the same problem. I eventually gave up and went with the Fluval 88g kit. Worked like a charm.

I even contacted ISTA support about the issue and their response was just to repeat the instructions on the card.
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post #9 of 17 (permalink) Old 08-17-2012, 03:04 AM
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The problem, as far as I can deduce from reported probs over internet, is that the needle valve is a fraction too short.

Capping the CO2 bottles gives a slight variation in how much of a dimple there is--something that apparently was not taken into consideration by ISTA. (Type "CO2 How It's Made" on YouTube.)

If ISTA made their needle valve 2mm longer, it would puncture the cartridges. Airgun manufacturers use longer needles because people would swear off that company's products if they encountered such problems.

ISTA has to redesign their needle valve.
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post #10 of 17 (permalink) Old 08-17-2012, 03:38 AM Thread Starter
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That's exactly the problem and it baffles me that they can continue to produce these without testing them.
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post #11 of 17 (permalink) Old 08-17-2012, 08:23 PM
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i'm not real familiar with that set up however i am familiar with thread areasol cans onto valves and fitting that are similar. I have a quick question. With the regulator off the cylinder, does the regulator valve move the piercing needle in or out ? ( up and down if attached on cylinder) On Automotive refrigerant cans you must turn valve all the way in till it bottoms out (piercing the seal) then back the valve out to allow gas to travel out of the can around the needle. the needle is tampered like a sharpened pencil so the more you turn out the more the volume and pressure is released. OR...... i have no idea what i'm talking about. only good intentions.
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post #12 of 17 (permalink) Old 08-17-2012, 08:32 PM Thread Starter
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The regulator doesn't move the needle at all.
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post #13 of 17 (permalink) Old 08-17-2012, 10:19 PM
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Boo. Probably a massed produced in china and shipped here in such large quantity that they couldn't scrap or rework them without going bankrupt.
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post #14 of 17 (permalink) Old 12-22-2012, 12:37 AM
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I just bought this at petco and the same thing is happening with me. Its not puncturing it at all.
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post #15 of 17 (permalink) Old 12-22-2012, 01:14 AM
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Quote:
Originally Posted by Slippryrock View Post
Boo. Probably a massed produced in china and shipped here in such large quantity that they couldn't scrap or rework them without going bankrupt.
It's scary how true this is. You can produce a batch of quality parts, get a good name going and just mass produce the rest. Then come out with a newer updated model, rinse and repeat.



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